Dickson Watts (PDF) has been dead for decades, but his wisdom never dies. Some fine lines:

“Many lean, few lift.”

“The man who conforms never transforms.”

“Rest with descending wave; mount with the ascending wave.”

“There is many a slip between the cup and the lip, but only one slip between the cup and the ground.”

“The unpardonable sin — not to make money.”

“Some men are alive after they are dead; others are dead while still alive.”