Take time to deliberate, but when the time for action comes, stop thinking and go in.

If you don't have time to do it right, when will you have the time to do it over?

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.

Only put off until tomorrow what you are willing to die having left undone

Nothing is particularly hard if you divide it into small jobs

All achievement, all earned riches, have their beginning in an idea.

To know what people really think, pay regard to what they do, rather than what they say.

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

By failing to prepare, you are preparing to fail.

You don't get paid for the hour. You get paid for the value you bring to the hour.

People refuse to take chances in business, because they fear the criticism which may follow if they fail.

Genius is eternal patience.

No one ever is defeated until defeat has been accepted as a reality.

Never make excuses. Your friends don't need them and your foes won't believe them.

I've always found the second book in a series is the hardest to write.

Be a yardstick of quality. Some people aren't used to an environment where excellence is expected.

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?

If everyone is moving forward together, then success takes care of itself.

Because ideas have to be original only with regard to their adaptation to the problem at hand, I am always extremely interested in how others have used them...

It is the set of the sails, not the direction of the wind that determines which way we will go.

It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things.