“No subject is terrible if the story is true, if the prose is clean and honest, and if it affirms courage and grace under pressure.”
— Ernest Hemingway, A Moveable Feast
“You can tell the size of the man by the size of the thing that makes him mad.”
— Adlai Stevenson
“You can listen to what people say, sure. But you will be far more effective if you listen to what people do.”

Advice of the day from 19th century philosopher Arthur Schopenhauer:

A man who writes carelessly at once proves that he himself puts no great value on his own thoughts. For it is only by being convinced of the truth and importance of our thoughts that there arises in us the inspiration necessary for the inexhaustible patience to discover the clearest, finest, and most powerful expression for them; just as one puts holy relics or priceless works of art in silvern or golden receptacles. It was for this reason that the old writers — whose thoughts, expressed in their own words, have lasted for thousands of years and hence bear the honored title of classics — wrote with universal care.

From the Brain Pickings post, Schopenhauer on Style.