Leap, and the net will appear.
I can, therefore I am.
If you think you can do it, you can.
You never know what motivates you.
Problems are not stop signs, they are guidelines.
Go for it now. The future is promised to no one.
Never complain and never explain.
Well done is better than well said.
Without hard work, nothing grows but weeds.
Quality is not an act, it is a habit.
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.