Things do not happen. Things are made to happen.
I can, therefore I am.
Be gentle to all and stern with yourself.
After a storm comes a calm.
Know or listen to those who know.
Well done is better than well said.
To know oneself, one should assert oneself.
Always desire to learn something useful.
If you're going through hell, keep going.
The secret of getting ahead is getting started.
In wilderness I sense the miracle of life, and behind it our scientific accomplishments fade to trivia.
I have seen the science I worshiped, and the aircraft I loved, destroying the civilization I expected them to serve.