If one morning I walked on top of the water across the Potomac River, the headline that afternoon would read "President Can't Swim".
A good man would prefer to be defeated than to defeat injustice by evil means.
If one sticks too rigidly to one's principles, one would hardly see anybody.
Science is nothing but developed perception, interpreted intent, common sense rounded out and minutely articulated.
The only way to get rid of a temptation is to yield to it.
The secret of greatness is simple: do better work than any other man in your field - and keep on doing it.
You must not lose faith in humanity. Humanity is an ocean; if a few drops of the ocean are dirty, the ocean does not become dirty.