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

We are the recorders and reporters of facts - not the judges of the behaviors we describe.

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

The heterosexuality or homosexuality of many individuals is not an all-or-none proposition.

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

Males do not represent two discrete populations, heterosexual and homosexual. The world is not to be divided into sheeps and goats. Not all things are black nor all things white.

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

Few males achieve any real freedom in their sexual relations even with their wives. Few males realise how badly inhibited they are on these matters.

Psychology at best tells us how things are, not how they are supposed to be!

People seem to think that life began with the achievement of personal independence.

Stop acting as if life is a rehearsal. Live this day as if it were your last. The past is over and gone. The future is not guaranteed.

Statistical projections which speak to the senses without fatiguing the mind, possess the advantage of fixing the attention on a great number of important facts.

But I don't think I have any particular talent for prediction, because when you have three or four elements in hand, you don't have to be a genius to reach certain conclusions.

Weather creates character.

Excellence is never granted to man, but as the reward of labour.

The young are always in extremes.

I find that one must accept the people in such a way as they are.

Prosperity in the form of wealth works exactly the same as everything else. You will see it coming into your life when you are unattached to needing it.