Andrew Carnegie was a very wealthy businessman, and was one of the richest men in history. Here are some quotes that he has said in his lifetime:

The average person puts only 25% of his energy and ability into his work. The world takes off its hat to those who put in more than 50% of their capacity, and stands on its head for those few and far between souls who devote 100%.

Aim for the highest.

And while the law of competition may be sometimes hard for the individual, it is best for the race, because it ensures the survival of the fittest in every department.

Do your duty and a little more and the future will take care of itself.

Immense power is acquired by assuring yourself in your secret reveries that you were born to control affairs.

No man will make a great leader who wants to do it all himself or get all the credit for doing it.

No person will make a great business who wants to do it all himself or get all the credit.

Surplus wealth is a sacred trust which its possessor is bound to administer in his lifetime for the good of the community.

The man who acquires the ability to take full possession of his own mind may take possession of anything else to which he is justly entitled.

You cannot push anyone up the ladder unless he is willing to climb.

Those are some very inspiring quotes that he left us with.