If you're going through hell, keep going.
Leap, and the net will appear.
Well done is better than well said.
If you can dream it, you can do it.
Be gentle to all and stern with yourself.
By failing to prepare, you are preparing to fail.
Things do not happen. Things are made to happen.
Either you run the day or the day runs you.
Be kind whenever possible. It is always possible.
Without hard work, nothing grows but weeds.
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.