There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.
Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.
Black holes are where God divided by zero.
Never memorize something that you can look up.
A man should look for what is, and not for what he thinks should be.
Everything should be made as simple as possible, but not simpler.