Know or listen to those who know.
It's always too early to quit.
Leap, and the net will appear.
Only the educated are free.
The dog that trots about finds a bone.
Well done is better than well said.
To be a good loser is to learn how to win.
Problems are not stop signs, they are guidelines.
Do not weep do not wax indignant. Understand.
If you've got a talent, protect it.
Though I had success in my research both when I was mad and when I was not, eventually I felt that my work would be better respected if I thought and acted like a 'normal' person.