The educated differ from the uneducated as much as the living differ from the dead.
I don’t believe in taking right decisions. Take decisions and make them right.
Science is what we have learned about how to keep from fooling ourselves.
Maybe true travel is not the transportation of the body, but a change of perception, renewing the mind.
Everyone you meet always asks if you have a career, are married, or own a house as if life was some kind of grocery list. But no one ever asks you if you are happy.
Study without desire spoils the memory, and it retains nothing that it takes in.
An expert is a person who has made all the mistakes that can be made in a very narrow field.
In a rational society we would want our presidents to be teachers. – In our actual society we insist they be cheerleaders.
If you’re afraid – don’t do it, – if you’re doing it – don’t be afraid.
The whole of science is nothing more than a refinement of everyday thinking.