The only unnatural sex act is that which you cannot perform.

- Alfred Kinsey

The history of medicine proves that in so far as man seeks to know himself and face his whole nature, he has become free from bewildered fear, despon…

- Alfred Kinsey

Cheese crumbs spread before a pair of copulating rats will distract the female but not the male.

- Alfred Kinsey

Males do not represent two discrete populations, heterosexual and homosexual. The world is not to be divided into sheeps and goats. Not all things ar…

- Alfred Kinsey

It is ordinarily said that criminal law is designed to protect property and to protect persons, and if society's only interest in controlling sex beh…

- Alfred Kinsey

If biologists so often forget the most universal of all biologic principles [variation], it is not surprising that men and women in general expect th…

- Alfred Kinsey

Art alone develops weaklings, science alone, monsters. Somewhere, somehow, we must combine the two.

- Alfred Kinsey

The range of variation in the female far exceeds the range of variation in the male.

- Alfred Kinsey

Only the human mind invents categories and tries to force facts into separated pigeonholes.

- Alfred Kinsey