Experience alone does not create knowledge.

Learning is more effective when it is an active rather than a passive process.

If you want truly to understand something, try to change it.

No research without action, no action without research.

A successful individual typically sets his next goal somewhat, but not too much, above his last achievement.

There is nothing so practical as a good theory.

When we are young we are like a flowing river - and then we freeze.

Social action, just like physical action, is steered by perception.

If you want to learn about an organization, try to change it.

Every psychological event depends upon the state of the person and at the same time on the environment, although their relative importance is different in different cases

A successful individual typically sets his next goal somewhat but not too much above his last achievement. In this way he steadily raises his level of aspiration.

Sometimes to self-discover you must self-destruct.

The worst kind of poison for despots: truth.

Bad decisions, good intentions.

If you're famous, you have to [be overly generous], otherwise people say, "Eric Idle came in and only left me $4." I always tip more than people expect.

To be calm is the highest achievement of the best of what you have.

I'm not going to quit. Why should I quit? This country is worth fighting for.

It is the service we are not obliged to give that people value most.

All one needs to do is declare oneself free and one will immediately feel dependent. If you dare to declare yourself dependent, you feel independent.

Teaching English is an intrinsically radical act. Is it possible to teach English so that people stop killing each other?

Rest is sweet after strife.