I can, therefore I am.
Well done is better than well said.
To know oneself, one should assert oneself.
It's always too early to quit.
Always desire to learn something useful.
To be a good loser is to learn how to win.
The secret of getting ahead is getting started.
Problems are not stop signs, they are guidelines.
Be kind whenever possible. It is always possible.
Quality is not an act, it is a habit.
The best museums and museum exhibits about science or technology give you the feeling that, hey, this is interesting, but maybe I could do something here, too.