Something doing every minute' may be a gesture of despair-or the height of a battle against boredom.

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.

If you sense so badly that you also sense a need to make me sense that, then I sense sadly that you cannot make better sense ... sadder still if you cannot sense my sincerity.

Round pegs in square holes tend to have dangerous thoughts about the social system and tend to infect others with their discontents.

A blush is the sign which Nature hangs out to show where chastity and honor dwell.

The point, as Marx saw it, is that dreams never come true.

Only through apprehending, by means of present-day creations, how art is created, can the creations of other periods be genuinely appreciated.

I always tweet about where we're at. Since I'm performing at amphitheaters, I'll try to run up and down the stairs and across the field.

I feel that Dennis Rodman has become a problem. He will be more of a problem than an asset. Of course, he can prove me wrong.

Global warming competes with cancer and competes with AIDS for a finite amount of money. Nobody ever won that fight by saying: My issue isn't important.

Because hypocrisy stinks in the nostrils one is likely to rate it as a more powerful agent for destruction than it is.