Act as if what you do makes a difference. It does.

The more you know, the better you can do.

Logic will get you from A to B. Imagination will take you everywhere.

You cannot have a positive life and a negative mind.

One's life has value so long as one attributes value to the life of others.

He who asks is a fool for five minutes, but he who does not ask remains a fool forever.

Everything is hard before it is easy.