What you do today can improve all your tomorrows.
It's always too early to quit.
To be a good loser is to learn how to win.
You never know what motivates you.
Quality is not an act, it is a habit.
If you think you can do it, you can.
After a storm comes a calm.
If you're going through hell, keep going.
To know oneself, one should assert oneself.
Be kind whenever possible. It is always possible.
Eventually, I believe, current attempts to understand the mind by analogy with man-made computers that can perform superbly some of the same external tasks as conscious beings will be recognized as a gigantic waste of time.