Why make yourself miserable saying things like, "Why do we have such bad luck? What has God done to us? What have we done to deserve this?" - all of which, if you understand reality and take it completely into your heart, are irrelevant and unsolvable. They are just things that nobody can know. Your situation is just an accident of life.

I love only nature, and I hate mathematicians.

To test whether you have learned an idea or a definition, rephrase what you just learned without using the new word.

It is simple, therefore it is beautiful

To not know math is a severe limitation to understanding the world.

Scientific knowledge is a body of statements of varying degrees of certainty -- some most unsure, some nearly sure, none absolutely certain.

Science is what we do to keep us from lying to ourselves