Every time you tear a leaf off a calendar, you present a new place for new ideas and progress.
My definition of an educated man is the fellow who knows the right thing to do at the time it has to be done. You can be sincere and still be stupid.
The only time you mustn't fail is the last time you try.
You can't have a better tomorrow if you are thinking about yesterday all the time.
An inventor fails 999 times, and if he succeeds once, he's in. He treats his failures simply as practice shots.