If you can dream it, you can do it.
Begin to be now what you will be hereafter.
Always desire to learn something useful.
It's always too early to quit.
The wise does at once what the fool does at last.
If you're going through hell, keep going.
Quality is not an act, it is a habit.
Either you run the day or the day runs you.
If you think you can do it, you can.
What you do today can improve all your tomorrows.
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.