The more man meditates upon good thoughts, the better will be his world and the world at large
Happiness depends upon ourselves
The scientific observer of Nature is a kind of mystic seeker in the act of prayer
The face is the mirror of the mind, and eyes without speaking confess the secrets of the heart
I am the wisest man alive, for I know one thing, and that is that I know nothing
Those who are free of resentful thoughts surely find peace
