Quality is not an act, it is a habit.
The most effective way to do it, is to do it.
Problems are not stop signs, they are guidelines.
Well done is better than well said.
To know oneself, one should assert oneself.
To be a good loser is to learn how to win.
It's always too early to quit.
Know or listen to those who know.
If you're going through hell, keep going.
Either you run the day or the day runs you.
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.