A hero is no braver than an ordinary man, but he is brave five minutes longer.
For every minute you are angry you lose sixty seconds of happiness.
No change of circumstances can repair a defect of character.
Nature is a mutable cloud which is always and never the same.
Do not go where the path may lead, go instead where there is no path and leave a trail.
The faith that stands on authority is not faith.
Don't be too timid and squeamish about your actions. All life is an experiment.
The greatest homage we can pay truth is to use it.
Great geniuses have the shortest biographies.
