Pick battles big enough to matter, small enough to win.
Do not go where the path may lead, go instead where there is no path and leave a trail.
This is the final test of a gentleman: his respect for those who can be of no possible value to him.
Applause is a receipt, not a bill.
Talent is God-given; be humble. Fame is man-given; be thankful. Conceit is self-given; be careful.
Never interrupt someone doing what you said couldn't be done.
Some of the best lessons we ever learn are learned from past mistakes. The error of the past is the wisdom and success of the future.
The universe is full of magical things, patiently waiting for our wits to grow sharper.
Those who cannot learn from history are doomed to repeat it.