The world does not pay men for that which they 'know'. It pays them for what they do, or induce others to do.

The successful leader must plan his work and work his plan.

The day science begins to study non-physical phenomena, it will make more progress in one decade than in all the previous centuries of its existence.

Without work, all life goes rotten, but when work is soulless, life stifles and dies.

You may have to fight a battle more than once to win it.

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

To copy others is necessary, but to copy oneself is pathetic

I am thankful to all those who said NO to me. It's because of them I did it myself.

Price is what you pay. Value is what you get.

It is easier for a tutor to command than to teach.

We struggle with the complexities and avoid the simplicities.

The best of artists has no conception that the marble alone does not contain within itself.

No man can taste the fruits of autumn while he is delighting his scent with the flowers of spring.

Inspiration exists, but it has to find you working.

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal.

I readily absorb ideas from every source, frequently starting where the last person left off

I'm a slow walker, but I never walk back.

Whether it's Google or Apple or free software, we've got some fantastic competitors and it keeps us on our toes.

At least with me, the match starts much, much earlier than the actual match.

Success is neither magical nor mysterious. Success is the natural consequence of consistently applying the basic fundamentals.

I fear not the man who has practiced 10,000 kicks once, but I fear the man who had practiced one kick 10,000 times.