human
As a general rule, the blonds are inconstant. They change their minds too often. They get angry one moment and forgive the next. They are impulsive, and when they do commit crimes they are done on the impulse of the moment. A blond radiates his personality about him. The brunette, on the other hand as a rule, likes to concentrate on one subject. He is a specialist. He prefers his home and family, and his pleasures are more often lectures and kindred entertainments than those of a lighter order. He learns slowly, but he retains what he knows far better than does the blond.
gpt
The Development of the Intellect,