If you've got a talent, protect it.
Be gentle to all and stern with yourself.
Quality is not an act, it is a habit.
Leap, and the net will appear.
Begin to be now what you will be hereafter.
If you're going through hell, keep going.
By failing to prepare, you are preparing to fail.
I can, therefore I am.
Things do not happen. Things are made to happen.
Go for it now. The future is promised to no one.
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.