It is what we make out of what we have, not what we are given, that separates one person from another.

In order to govern, the question is not to follow out a more or less valid theory but to build with whatever materials are at hand. The inevitable must be accepted and turned to advantage.

The first requisite for success is to develop the ability to focus.

There is far more opportunity than there is ability.

My success is due more to my ability to work continuously on one thing without stopping than to any other single quality.

The first requisite of success is the ability to apply your physical and mental energies to one problem without growing weary.