Before impugning an opponent's motives, even when they legitimately may be impugned, answer his arguments.

Everyone who remembers his own education remembers teachers, not methods and techniques. The teacher is the heart of the educational system.

Tolerance always has limits - it cannot tolerate what is itself actively intolerant.

To silence criticism is to silence freedom.

I was guilty of judging capitalism by its operations and socialism by its hopes and aspirations; capitalism by its works and socialism by its literature.

The easiest rationalization for the refusal to seek the truth is the denial that truth exists.

Fear of death has been the greatest ally of tyranny past and present.

The difference between science and religion is that the former wishes to get rid of mysteries whereas the latter worships them.

Nonetheless, it still remains true that as a set of cognitive beliefs, religious doctrines constitute a speculative hypothesis of an extremely low order of probability.

In contrast to totalitarianism, democracy can face and live with the truth about itself.

Students rarely disappoint teachers who assure them in advance that they are doomed to failure.

Because if they grow up holding on to such terrible feelings, it could lead to another war come time in the future when the fate of the country is in their hands.

Render unto God the things that are God’s

It's nice to be pushed, when you're being pushed in the right direction.

I love those who yearn for the impossible.

In the end, everyone loses everyone. There was no invention to get around that.

I tell my kids, 'I am thinking about you every other minute of my day.'

I really would like to be able to face all my superstitions that may have existed and walk under the ladder and do everything you're not supposed to do.

What is sad is not to be able to do today what you have done in your youth. But what is good is to remember that - when you were able - you did it to the best of your ability.

I would rather miss the mark acting well than win the day acting basely.

I'd seen musicians act, and it scares me. And they make more money than me.