You have no control over what the other guy does. You only have control over what you do.
Reveal not every secret you have to a friend, for how can you tell but that friend may hereafter become an enemy. And bring not all mischief you are able to upon an enemy, for he may one day become your friend.
When you encounter difficulties and contradictions, do not try to break them, but bend them with gentleness and time.
Howard Hughes was able to afford the luxury of madness, like a man who not only thinks he is Napoleon but hires an army to prove it.
Now we were descending just as steeply.
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.
Misquotations are the only quotations that are never misquoted.