Observe, Remember, Compare.

Before anything else, preparation is the key to success.

Great discoveries and improvements invariably involve the cooperation of many minds.

The only difference between success and failure is the ability to take action.

The most successful men in the end are those whose success is the result of steady accretion.

Man is an animal which, alone among the animals, refuses to be satisfied by the fulfillment of animal desires.

When one door closes, another one opens.