A mind cannot be independent of culture.

The most significant moment in the course of intellectual development, which gives birth to the purely human forms of practical and abstract intelligence, occurs when speech and practical activity, two previously completely independent lines of development, converge.

Somehow our society has formed a one-sided view of the human personality, and for some reason everyone understood giftedness and talent only as it applied to the intellect. But it is possible not only to be talented in one's thoughts but also to be talented in one's feelings as well.

In play, a child is always above his average age, above his daily behavior; in play, it is as though he were a head taller than himself.

I originally envisioned myself doing something with the suffix 'ology' at the end of it, like marine biology or entomology. But after I started to do some acting gigs, I thought it wasn't a bad thing... I said to myself, 'I might as well keep riding this bus until the wheels fall off.'

Psychology is the science of the act of experiencing, and deals with the whole system of such acts as they make up mental life.

I was in the military, and then I went to university to study biology.

My father has a great love of science, and he indoctrinated me into it early. I think I was 12 or so when we designed a moon base.