If you're going through hell, keep going.
Without hard work, nothing grows but weeds.
If you can dream it, you can do it.
To be a good loser is to learn how to win.
Problems are not stop signs, they are guidelines.
The dog that trots about finds a bone.
Who seeks shall find.
The secret of getting ahead is getting started.
If you think you can do it, you can.
Never complain and never explain.
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.