Leap, and the net will appear.
If you're going through hell, keep going.
You never know what motivates you.
If you think you can do it, you can.
To know oneself, one should assert oneself.
If you can dream it, you can do it.
After a storm comes a calm.
By failing to prepare, you are preparing to fail.
Never complain and never explain.
Expect problems and eat them for breakfast.
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.