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

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

Success is having a flair for the thing that you are doing, knowing that is not enough, that you have got to have hard work and a sense of purpose.

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

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

The role of the artist is to ask questions, not answer them.

One of the main weaknesses of mankind is the average man's familiarity with the word 'impossible'.

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.

What one has to do usually can be done.

Talent is cheaper than table salt. What separates the talented individual from the successful one is a lot of hard work.

You never achieve success unless you like what you are doing.

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

There is little success where there is little laughter.

The man who is swimming against the stream knows the strength of it.

Try not to become a man of success but rather to become a man of value.

No man ever achieved worthwhile success who did not, at one time or other, find himself with at least one foot hanging well over the brink of failure.

To those whom much is given, much is expected.

Old Professors never die, they just lose their faculties.

Sell a man a fish, he eats for a day, teach a man how to fish, you ruin a wonderful business opportunity.

If you treat people right they will treat you right - ninety percent of the time.

Action is the foundational key to all success.