What you do today can improve all your tomorrows.
Always desire to learn something useful.
If you've got a talent, protect it.
Quality is not an act, it is a habit.
If you're going through hell, keep going.
You never know what motivates you.
Expect problems and eat them for breakfast.
Either you run the day or the day runs you.
If you think you can do it, you can.
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.