Intellectual freedom is the only guarantee of a scientific - democratic approach to politics, economic development, and culture.

Our country, like every modern state, needs profound democratic reforms. It needs political and ideological pluralism, a mixed economy and protection of human rights and the opening up of society.

Both now and for always, I intend to hold fast to my belief in the hidden strength of the human spirit.

A country which does not respect the rights of its own citizens will not respect the rights of its neighbours

Do not trust governments more than governments trust their own people.

Profound insights arise only in debate, with a possibility of counterargument, only when there is a possibility of expressing not only correct ideas but also dubious ideas.

You can't sit on two chairs at once.

In 1947 I defended my thesis on nuclear physics, and in 1948 I was included in a group of research scientists whose task was to develop nuclear weapons.

I could not stop something I knew was wrong and terrible. I had an awful sense of powerlessness.

I regard the death penalty as a savage and immoral institution that undermines the moral and legal foundations of society.

Profound thoughts arise only in debate, with a possibility of counterargument, only when there is a possibility of expressing not only correct ideas, but also dubious ideas.

[P]art of the pleasure of engaging with a writer is unraveling some allusions and admitting defeat by others.

Everything that happens around and within us is a reflection of our thoughts, imaginations, and actions.

People may oppose you, but when they realize you can hurt them, they'll join your side.

Happiness comes of the capacity to feel deeply, to enjoy simply, to think freely, to risk life, to be needed.

If you put on an item of clothing that hurts just because you have an idea it looks better or conforms to what other people are wearing, it's dumb.

Next to the dog, the wastebasket is your best friend.

In America, we don't even have a border. It's an open sieve.

Mathematics is fun if you don't let mathematicians push you around when you are doing it.

Love, how many roads to obtain a kiss.

I'm sure that when my daughter will bring home her first boyfriend I'll? be so intimidating that he'll run away, but embarrassing as well, just to have a bit of fun.