Problems are not stop signs, they are guidelines.
Go for it now. The future is promised to no one.
Be gentle to all and stern with yourself.
Wherever you are - be all there.
Quality is not an act, it is a habit.
It's always too early to quit.
Know or listen to those who know.
Never complain and never explain.
To be a good loser is to learn how to win.
Either you run the day or the day runs you.
The frontiers of knowledge in the various fields of our subject are expanding at such a rate that, work as hard as one can, one finds oneself further and further away from an understanding of the whole.