The true artist is quite rational as well as imaginative and knows what he is doing; if he does not, his art suffers.

To make discoveries, you have to be curious about why the universe is the way it is.

It seems to me that God is a convenient invention of the human mind

A scientist is as weak and human as any man, but the pursuit of science may ennoble him even against his will.

Never judge your own writing. You're not fit to do so.

They won't listen. Do you know why? Because they have certain fixed notions about the past. Any change would be blasphemy in their eyes, even if it were the truth. They don't want the truth; they want their traditions.

Intelligence is an extremely subtle concept. It's a kind of understanding that flourishes if it's combined with a good memory, but exists anyway even in the absence of good memory. It's the ability to draw consequences from causes, to make correct inferences, to foresee what might be the result, to work out logical problems, to be reasonable, rational, to have the ability to understand the solution from perhaps insufficient information. You know when a person is intelligent, but you can be easily fooled if you are not yourself intelligent.