Only the educated are free.
You never know what motivates you.
Expect problems and eat them for breakfast.
The wise does at once what the fool does at last.
It's always too early to quit.
Without hard work, nothing grows but weeds.
Know or listen to those who know.
Who seeks shall find.
If you've got a talent, protect it.
Always desire to learn something useful.
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.