1. Genius is one percent inspiration and ninety-nine percent perspiration. 2. A psychologist is a man who watches everybody rise when a beautiful girl enters the room. 3. An expert is a man who knows a great deal about very little; and who goes on knowing more and more about less and less until finally he knows practically everything about nothing; whereas a reviewer is a man who knows very little about a great deal and keeps on knowing less and less about more and more until finally he knows practically nothing about everything.