Men build society and society builds men.

A failure is not always a mistake, it may simply be the best one can do under the circumstances. The real mistake is to stop trying.

A person who has been punished is not thereby simply less inclined to behave in a given way; at best, he learns how to avoid punishment.

Give me a child and I'll shape him into anything.

The major difference between rats and people is that rats learn from experience.

Education is what survives when what has been learned has been forgotten.

Behavior is determined by its consequences.

That's all teaching is; arranging contingencies which bring changes in behavior.

Behavior is shaped and maintained by its consequences

The way positive reinforcement is carried out is more important than the amount.

It is not a question of starting. The start has been made. It's a question of what's to be done from now on.

..the most dangerous animal in a zoo is Man.

Our tragedy is that we forget it might be someone else first.

I'm afraid you will have to fly holding the rock with its heavy chain.

Earth does not belong to us; we belong to earth. Take only memories, leave nothing but footprints.

Remember that life is short and death is long.

Win for yourself that which your fathers have won.

If you're fortunate enough with your history, like with Men in the Cities, your work becomes so absorbed in culture that the authorship of it doesn't exist anymore.

The best measure of success, is how you deal with failure

Some people get therapy, some people get to make movies.

The mind, relaxing into needful sport, Should turn to writers of an abler sort, Whose wit well managed, and whose classic style, Give truth a lustre, and make wisdom smile.