Never believe anything in politics until it has been officially denied.

The faith that stands on authority is not faith.

Truth can never be told so as to be understood and not be believed.

No way of thinking or doing, however ancient, can be trusted without proof.

Don’t believe anything I’ve told you — merely because I said it.

It is given to no human being to stereotype a set of truths, and walk safely by their guidance with his mind's eye closed.

never trust the words of a man who is not free.

Never believe anyone who tells you that you don't deserve what you want.

Believe nothing, no matter who said it, even if I said it, unless it agrees with your own reason and common sense

But to find out the truth about how dreams die, one should never take the word of the dreamer.

It certainly is no proof that a man is inspired simply because he is right.

No man who says, 'I'm as good as you,' believes it. He would not say it if he did.

No morality can be founded on authority, even if that authority were divine

Never can an authority admit that the intellectually courageous - those who dare to defy his authority - may be the most valuable type.