Always desire to learn something useful.
The dog that trots about finds a bone.
What you do today can improve all your tomorrows.
If you can dream it, you can do it.
By failing to prepare, you are preparing to fail.
Things do not happen. Things are made to happen.
If you've got a talent, protect it.
Be kind whenever possible. It is always possible.
Wherever you are - be all there.
Never complain and never explain.
I tried a dozen different modifications that were rejected. But they all served as a path to the final design.
I'm proud of my invention, but I'm sad that it is used by terrorists.