Boredom is one of the most blissful feelings.

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

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

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

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

Effective communication is 20% what you know and 80% how you feel about what you know.

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

I will prepare and some day my chance will come.

The best way to destroy an enemy is to make him a friend.

Real success can only come if there is a change in our societies and in our economics and in our politics.

Practice does not make perfect. Perfect practice makes perfect.

It’s not about what it is, it’s about what it can become.

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?

Our fatigue is often caused not by work, but by worry, frustration and resentment

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.

I never did a day's work in my life. It was all fun.

Success is never final. Failure is never fatal. It s courage that counts.

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.

It is a cursed evil to any man to become as absorbed in any subject as I am in mine

Those who vote decide nothing. Those who count the vote decide everything.

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.