Motivation is when your dreams put on work clothes
Waste neither time nor money, but make the best use of both.
Nor is it of much Importance to us to know the Manner in which Nature executes her laws; 'tis enough to know the Laws themselves.
Paintings and fightings are best seen at a distance.
There will be plenty of time to sleep once you are dead
There is nothing wrong with retirement as long as one doesn't allow it to interfere with one's work.