Mystery creates wonder and wonder is the basis of man's desire to understand. Neil Armstrong
As a single footstep will not make a path on the earth, so a single thought will not make a pathway in the mind. To make a deep physical path, we walk again and again. To make a deep mental path, we must think over and over the kind of thoughts we wish to dominate our lives. Henry David Thoreau
Be nice to people on your way up because you'll meet them on your way down. Wilson Mizner
The mind is like an iceberg, it floats with one-seventh of its bulk above water. Sigmund Freud
It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt. Mark Twain