Never complain and never explain.
If you think you can do it, you can.
Well done is better than well said.
Be thine own palace, or the world's thy jail.
Go for it now. The future is promised to no one.
Wherever you are - be all there.
The wise does at once what the fool does at last.
Be kind whenever possible. It is always possible.
It's always too early to quit.
Do not weep do not wax indignant. Understand.
That attitude does not exist so much today, but in those days there was a very sharp distinction between basic physics and applied physics. Columbia did not deal with applied physics.