Well done is better than well said.
Be thine own palace, or the world's thy jail.
After a storm comes a calm.
To be a good loser is to learn how to win.
What you do today can improve all your tomorrows.
It's always too early to quit.
If you're going through hell, keep going.
Begin to be now what you will be hereafter.
Problems are not stop signs, they are guidelines.
Know or listen to those who know.
I am a teacher, and I am proud of it. At Cornell University I have taught primarily undergraduates, and indeed almost every year since 1966 have taught first-year general chemistry.