To know oneself, one should assert oneself.
Things do not happen. Things are made to happen.
If you've got a talent, protect it.
The wise does at once what the fool does at last.
Be gentle to all and stern with yourself.
Who seeks shall find.
Either you run the day or the day runs you.
If you can dream it, you can do it.
Do not weep do not wax indignant. Understand.
Always desire to learn something useful.
I'm someone who's done the opposite of whatever the received wisdom is, to keep your career going into your 50s.