The world is a dangerous place to live, not because of the people who are evil, but because of the people who don't do anything about it.

Out of clutter, find simplicity.

Everything should be made as simple as possible ... But not simpler.

The whole of science is nothing more than a refinement of everyday thinking.

Small is the number of people who see with their eyes and think with their minds.

A man's value to the community depends primarily on how far his feelings, thoughts, and actions are directed towards promoting the good of his fellows.