The wise does at once what the fool does at last.
Be gentle to all and stern with yourself.
Know or listen to those who know.
If you're going through hell, keep going.
If you think you can do it, you can.
It's always too early to quit.
Things do not happen. Things are made to happen.
Expect problems and eat them for breakfast.
To be a good loser is to learn how to win.
Only the educated are free.
The work on ants has profoundly affected the way I think about humans.