The secret of all true persuasion is to induce the person to persuade himself.

The immature mind hops from one thing to another; the mature mind seeks to follow through.

Time the devourer of everything.

The happiest thing that can be said about democracy... is that it is one of the few systems that has been willing to risk a long period of confusion and mixed purposes for the sake of giving man a chance to grow up in mind and responsibility.

The very essence of all power to influence lies in getting the other person to participate. The mind that can do that has a powerful leverage on his human world.

The mature mind seeks to follow through.

A person remains immature, whatever his age, as long as he thinks of himself as an exception to the human race.