The highest knowledge is to know that we are surrounded by mystery.
A man is ethical only when life, as such, is sacred to him.
Grow into your ideals so that life cannot rob you of them.
Life becomes harder for us when we live for others, but it also becomes richer and happier.
An optimist is a person who sees a green light everywhere, while a pessimist sees only the red stoplight... the truly wise person is colorblind.
Train yourself never to put off the word or action for the expression of gratitude.