What you do today can improve all your tomorrows.
If you're going through hell, keep going.
To know oneself, one should assert oneself.
Begin to be now what you will be hereafter.
Leap, and the net will appear.
If you think you can do it, you can.
Quality is not an act, it is a habit.
Things do not happen. Things are made to happen.
You never know what motivates you.
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.