Old Professors never die, they just lose their faculties.

If I had eight hours to chop down a tree, I'd spend six hours sharpening my axe.

One must be sane to think clearly, but one can think deeply and be quite insane.

Most people spend more time and energy going around problems than in trying to solve them.

Action is the foundational key to all success.

Thinking is the hardest work there is, which is probably the reason so few engage in it.

I do know that when I am 60, I should be attempting to achieve different personal goals than those which had priority at age 20.

You cannot change your destination overnight, but you can change your direction overnight

I`d like to live as a poor man with lots of money.

I am easily satisfied with the very best.

We struggle with the complexities and avoid the simplicities.

Work does not kill a man, it is worry, irregularity and uncertainty that kill.

Success is doing ordinary things extraordinarily well.

Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

Good things happen to those who hustle.

Our greatest glory is not in never failing, but in rising up every time we fail.

If you try to be anyone but yourself, you will fail; if you are not true to your own heart, you will fail. Then again, there's no success like failure

Be quick, but don't hurry.

I'm a greater believer in luck, and I find the harder I work the more I have of it

One of the greatest discoveries a person makes, one of their great surprises, is to find they can do what they were afraid they couldn't do.

When things go wrong don't go with them