Science is not everything, but science is very beautiful.

Both the man of science and the man of action live always at the edge of mystery, surrounded by it.

The best way to send information is to wrap it up in a person.

There must be no barriers for freedom of inquiry... There is no place for dogma in science. The scientist is free, and must be free to ask any question, to doubt any assertion, to seek for any evidence, to correct any errors.

It is a profound and necessary truth that the deep things in science are not found because they are useful; they are found because it was possible to find them.

The physicists have known sin; and this is a knowledge which they cannot lose.

In the material sciences these are and have been, and are most surely likely to continue to be heroic days.