It is wrong to think that belief in freedom always leads to victory; we must always be prepared for it to lead to defeat. If we choose freedom, then we must be prepared to perish along with it.

True ignorance is not the absence of knowledge, but the refusal to acquire it.

The growth of knowledge depends entirely upon disagreement.

In so far as a scientific statement speaks about reality, it must be falsifiable; and in so far as it is not falsifiable, it does not speak about reality.

The question is not how to get good people to rule; THE QUESTION IS: HOW TO STOP THE POWERFUL from doing as much damage as they can to us.

If you can't say it simply and clearly, keep quiet, and keep working on it till you can.

The best thing that can happen to a human being us to find a problem, to fall in love with that problem, and to live trying to solve that problem, unless another problem even more lovable appears.

Ignorance is not a simple lack of knowledge but an active aversion to knowledge, the refusal to know, issuing from cowardice, pride, or laziness of mind.

A theory which is not refutable by any conceivable event is non-scientific. Irrefutability is not a virtue of a theory (as people often think) but a vice.

I may be wrong and you may be right, and by an effort, we may get nearer to the truth

The attempt to make heaven on earth invariably produces hell.

if God spared not His own Son, how much less will He spare you!

History is what we write, not what we remember. Why should we tarnish the memory of our planet by enshrining our less then noble deeds?

I'm the parent. It's my job to be here for you, not the other way around.

Being famous before you've formed your personality, before you have that self-esteem, is dangerous.

I can't not write, if I don't then I get really depressed.

People's memories are maybe the fuel they burn to stay alive.

Sixty-five countries doing nothing is not a coalition. We need a strategy. That's the first and foremost thing that we need.

Mistakes are doorways to discovery.

The Lord would so cleanse the motive and desires of our hearts that we will seek but one thing only, and that is, His glory.

A dictator must fool all the people all the time and there's only one way to do that, he must also fool himself.