Impossible things are simply those which so far have never been done.
When trouble comes, wise men take to their work; weak men take to the woods.
You can lead a boy to college, but you cannot make him think.
I would rather be able to appreciate things I can not have than to have things I am not able to appreciate.
The secret of success is this: there is no secret of success.
When you grow suspicious of a person and begin a system of espionage upon him, your punishment will be that you will find your suspicions true.