I can, therefore I am.
Be gentle to all and stern with yourself.
Well done is better than well said.
Wherever you are - be all there.
Who seeks shall find.
What you do today can improve all your tomorrows.
Always desire to learn something useful.
The secret of getting ahead is getting started.
Things do not happen. Things are made to happen.
Problems are not stop signs, they are guidelines.
If a weakly mortal is to do anything in the world besides eat the bread thereof, there must be a determined subordination of the whole nature to the one aim no trifling with time, which is passing, with strength which is only too limited.