If you think your teacher is tough, wait until you get a boss. He doesn't have tenure.

For it is commonly said: accomplished labours are pleasant.

Be interesting, be enthusiastic... and don't talk too much.

Four things for success: work and pray, think and believe.

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

Riches do not respond to wishes. They respond only to definite plans, backed by definite desires, through constant persistence.

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

Your most unhappy customers are your greatest source of learning.

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

To be clever enough to get all that money, one must be stupid enough to want it.

Apple's market share is bigger than BMW's or Mercedes's or Porsche's in the automotive market. What's wrong with being BMW or Mercedes?

I never pick up an item without thinking of how I might improve it.

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

I believe that anyone can conquer fear by doing the things he fears to do, provided he keeps doing them until he gets a record of successful experiences behind him.

Innovation distinguishes between a leader and a follower.

Either you run the day or the day runs you.

Dad, you've done a lot of great things, but you're a very old man, and old people are useless.

Success comes to those who become success conscious. Failure comes to those who indifferently allow themselves to become failure conscious.

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

There are many ways of going forward, but only one way of standing still.

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.