Never ever underestimate the power of human stupidity.
A competent and self confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity.
Everything is theoretically impossible, until it is done. One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen.
One man's religion is another man's belly laugh.
Self awareness is NOT just a bunch of amino acids bumping together.
The reasonable man adapts himself to the world the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
The stars incline, but do not impel.
Your enemy is never a villain in his own eyes. Keep this in mind, it may offer a way to make him your friend. If not, you can kill him without hateand quickly.
Love is a condition in which the happiness of another person is essential to your own.