Try not to turn your life into a race, least of all an obstacle race.
Even if you're not going anywhere, don't get in the way.
A rocket is an experiment; a star is an observation.
You can say the opposite of something you've said but you can't do the opposite of something you've done.
The man who spends all his time looking up to heaven is not always the best; in fact, he is usually the worst.
A belief which leaves no place for doubt is not a belief; it is a superstition.