All things are difficult before they are easy.
Everybody knows how to raise children, except the people who have them.
What we call evil is only a necessary moment in our endless development.
The law embodies the story of a nation's development through many centuries, and it cannot be dealt with as if it contained only the axioms and corollaries of a book of mathematics.
—Oliver Wendell Holmes Jr.
He's simply got the instinct for being unhappy highly developed.