If you think you can do it, you can.
To know oneself, one should assert oneself.
Be gentle to all and stern with yourself.
If you've got a talent, protect it.
Be kind whenever possible. It is always possible.
You never know what motivates you.
Who seeks shall find.
Always desire to learn something useful.
The most effective way to do it, is to do it.
Either you run the day or the day runs you.
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.