Problems are not stop signs, they are guidelines.
If you think you can do it, you can.
The dog that trots about finds a bone.
Never complain and never explain.
What you do today can improve all your tomorrows.
Without hard work, nothing grows but weeds.
After a storm comes a calm.
Do not weep do not wax indignant. Understand.
Be kind whenever possible. It is always possible.
It's always too early to quit.
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.