If you've got a talent, protect it.
Without hard work, nothing grows but weeds.
What you do today can improve all your tomorrows.
Always desire to learn something useful.
Leap, and the net will appear.
Never complain and never explain.
Know or listen to those who know.
Begin to be now what you will be hereafter.
Go for it now. The future is promised to no one.
Expect problems and eat them for breakfast.
I wrote somewhere during the Cold War that I sometimes wish the Iron Curtain were much taller than it is, so that you could see whether the development of science with no communication was parallel on the two sides. In this case it certainly wasn't.