It's better to have loved and lost than to have to do forty pounds of laundry a week.
Man is not logical and his intellectual history is a record of mental reserves and compromises. He hangs on to what he can in his old beliefs even when he is compelled to surrender their logical basis.
The path of least resistance and least trouble is a mental rut already made....
No man's credit is as good as his money.
Every great advance in science has issued from a new audacity of imagination.
There is no reason to repeat bad history.
There were various turning points, but the main one at the beginning was...
Look into the heavens and say, “It’s my turn to make history.
