Sometime I plan on writing up what I see as the major historical races of Europe, and blond hair is one of the defining markers for one of these groups. Basically, Baltic-Slavic-Nordic. Below is a rough sketch of my thoughts so far.
Slavic, meaning where they originated from in the eastern and northern parts of Europe, not southern Slavs whose geography, appearance, subsistence mode, and culture in general are the total opposites of the original Slavs. And Nordic, meaning Scandinavian (although not the Norse / Vikings, who they largely displaced or replaced).
Their language group is Balto-Slavic, a fairly uncontroversial joining of the Baltic and Slavic sub-families within Indo-European. Many today also speak Germanic languages in Scandinavia, but I think those were originally the languages of fiery redheads, from the groups who Tacitus describes up through the Vikings. Swedish, Norwegian, and Danish were adopted by the conquerors of the Vikings, probably before the actual conquest, during their initial entry into Scandinavia.
Their most defining physical characteristic is a high percentage of blond hair. Related to this is what I observe to be higher rates of baldness. As a quick check, notice how bald the Russian and Soviet leaders have been from Lenin to Putin (minus Stalin, an ethnic Georgian). Anglo leaders tend to have fuller heads of hair, particularly if they're more Celtic like Kennedy or Reagan.
As I've described elsewhere, baldness was selected for as an honest signal of monogamous future behavior by husbands. What are your options for cheating on your wife when you're bald? Your wife can project that forecast just as easily as you can, so you both know -- and are perhaps even aware of each other's knowledge -- that the husband isn't going to stray. The best part -- whether he wants to stray or not. It doesn't neuter his libido necessarily, but only his ability to make use of it toward adultery.
The Baltic-Slavic-Nordic race is also obsessed with hygiene, regulations, and order. Outsource the regulation of social behavior to larger-scale third parties like the state, rather than settle things among yourselves. This basic attitude takes slightly different shape in Scandinavian socialist countries, the quasi-socialist Scandinavian Midwestern America, Mormon country, and the heart of the Soviet Union.
All of this makes the blondest race sound like Europe's take on the East Asian morph, such as the Japanese or Han Chinese. Much lighter than their neighbors? Check. More monogamous in actuality, whether or not they have bizarre thoughts or perverted desires? Yep. Obsessed with hygiene, though not so much with disgust in a broad sense? Orderliness, a deeply felt need for regulations in social and even personal life? Involving the state in what are usually personal or grassroots-level matters? Yes, yes, and yes again.
And as with the Baltic-Slavic-Nordic group, the Han and Japanese are not entirely the same. The Japanese are not quite as adapted to large-scale sedentary agriculture as the Han are, because they live in a more hilly and mountainous area with lots of rivers and seas to fish in, and they appear to have mixed with a relatively more go-with-the-flow group. Their state is not as intrusive as it is in China. Japan is more like Scandinavia, and China more like Russia / Soviet core.
Parenting styles are more helicopter parent / tiger mother among these groups, and they tend to spend more time within a nuclear family setting, cocooning away from the community.
All of these groups like minimalist aesthetics too, in contrast to their neighbors who value at least a little ornament in their visual culture. What their neighbors call bland and soul-starving, they would call calming and meditative.
What about their material culture drives them all this way, and their neighbors in some other way? It's the age-old story of farmers vs. herders. The Baltic-Slavic-Nordic race appears to be the end result of adaptation to the European plain, which is designed for large-scale sedentary agriculture. Ditto their East Asian counterparts.
The Celto-Germanic race was made for more hardy living up in hilly or mountainous regions, relying more on transhumance pastoralism than on planting and harvesting crops. They don't suffer as much from OCD, and if anything skip a little on personal hygiene while being moved more forcefully by a sense of disgust. Strong central states that could mediate as third parties in lower-level disputes are hard to come by in hilly, mountainous regions, so they're more adapted to face-to-face relations, whether revenge and feuding after an insult, or the culture of hospitality to prevent anyone from getting on anyone else's bad side.
And because herding livestock involves less drudgery but more risk, Celto-Germanic people are more party-hardy or "work hard, play hard" types, while the Baltic-Slavic-Nordic group is less spirited and joyful, either nose-the-grindstone or just total listless drop-outs (the opium den, the drunken Balto-Slavic peasant).
As for unusual hair color, they're more likely to have a good fraction of redheads rather than blonds. Generally, though, their look is dark hair and light eyes.
These differences come into focus most sharply in the artificial country today called "Deutschland." The western and southern regions are more Germanic, and the northern and eastern regions more Nordic. The innumerable conflicts that follow this fault-line are often described as a form of civil war or civil conflicts -- the Protestant Reformation vs. the German Catholics, the Nazi north vs. the Conservative south, Scandinavian orderliness in the north vs. the carnivalesque Oktoberfest in the south, the more dynamic south and the more listless north, and so on. Soviet influence doesn't go back to the Reformation, and was probably not terribly out of place in the east. At worst, adding yet another layer of what was already there on top of itself.
But the more I look at it, the more it seems like an inter-group conflict, and not always within a single nation-state where "civil war" would make more sense. It's a larger clash of civilizations that's been going on since the Baltic-Slavic-Nordic group began its push from the east and drove the Germanic groups farther west -- the last major migration with chain reactions throughout Europe.
That's enough of a sketch for now. The title of this post comes from a comment to the post below on the greater tendency for blonds to play it safe, and so not wind up at the highest levels of cultural achievement. Someone named "The Blondest" stole the words out from my mouth about the similarity between blonds and East Asians. I'm copying the whole comment below the asterisks, to reinforce what I've said, while showing that it's not just crazy armchair theorizing.
If you've met enough people, been to enough places, or at least read about them, I don't think these basic ideas should be too controversial, although you might not have tied them all together in your awareness before.
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Blondes are bascially less-spergy more atheletic East Asians. I say this from my experience being a blonde man. Blondes are more practical in their thinking than dark haired white people. A lot of the biggest white losers and white winners I know tend to be dark haired white people. While most of the blondes I know are successful, yet not at the top of their fields.
Also I noticed that I and my blonde family members and friends tend to be less criminal than dark haired whtie people. I have known some whtie felons, nearly all of them tend to be dark haired.
On the flipside of things. Most of the creative people I know tend to be dark haired white people. My mother is a pretty good artist compared to me, and she is dark haired. Most of the musicians and interesting academics I knew from college were dark haired.
Also I noticed that me and many blonde people have an easy time with East Asians. A lot of my friends tend to be East Asian. Many blonde people I know have close East Asian friends. Most of the whtie guys that date or marry East Asian girls tend to be blonde. Also I noticed a lot of academic books written about East Asian culture tend to be from blonde people. Also most normal weeboo (white anime fans) tend to be blondes. They are not into the tenacle porn stuff like many dark haired weeboos.
A huge number of gay guys I know are natural blondes. However, they tend to be more normal and sociable than dark haired white and East Asian gay guys.
My blonde friends tend to have far more diverse and bigger circle of friends than most East Asians I know. Also I have noticed the most hardcore whtie spergs tend to be dark haired white people, and the most normal autistic white people tend to be blondes. They usually have good jobs and some success with women compared to the dark haired white spergs.
Most Blondes I know tend to be atheletic and not fat. A lot of exercise science majors I know are blonde. Many blondes are health nerds. A lot of blonde people are into paleo-diet like my brother in law.
The smartest vets and cops I know tend to be blondes too. They usually have degrees and study their fields of work. And I noticed blondes tend to be politically moderate yet oprn minded about controversial subjects like race realism. They usually do not have extreme political opinions even in a moderate sense. Ann Coulter and Wendy Davis are bottle blondes I might add.
Lastly I have met a lot of blondes with STEM degrees, but they have little interest in theoritical stuff like string theory. They usually want to become IT professionals, engineers or geneticists.
Blondes are usually viewed as being cute and childish, because blondes are simply more laid back about life than dark haired white people. However, this seriousness of dark haired white people is one of the reasons why they are more accomplished than blondes.
I think if the Nordic region had been a island with considerable distance from other landmasses. I believe it would be culturally like a less perverted and more atheletic version of Japan made up of tall blonde people. I think gene flow from dark haired people have somewhat hastened this directional selection toward blondeness. In some alternative universe, the Nords would be their own distinct race of blonde giants. They would be known for their good economics yet bland pop-culture. Actually that sounds like the Nordic countries today.
PS: Sorry for the bad spelling and grammer. I did not edit this well. Also I am not looking to have a flame war with anybody. I am serious about my observations, but they are still just my observations. I am very interested if anybody has noticed the same things I noticed about my fellow blondes. Also I am not defending blondes. We are less creative and somewhat more spergy than dark haired white people.