The two most important days in your life are the day you are... - Mark Twain

"When I was a boy of 14, my father was so ignorant I could hardly stand to have the old man around. But when I got to be 21, I was astonished at how much the old man had learned in seven years."

"Education: that which reveals to the wise, and conceals from the stupid, the vast limits of their knowledge."

"Good friends, good books, and a sleepy conscience: this is the ideal life."

"All you need in this life is ignorance and confidence; then success is sure."

"Name the greatest of all inventors. Accident."