Be gentle to all and stern with yourself.
Without hard work, nothing grows but weeds.
Always desire to learn something useful.
Either you run the day or the day runs you.
You never know what motivates you.
To know oneself, one should assert oneself.
Things do not happen. Things are made to happen.
Expect problems and eat them for breakfast.
The wise does at once what the fool does at last.
Wherever you are - be all there.
I think America has more than enough maturity and intelligence to start exercising its world leadership responsibly.