"It is necessary to the happiness of man that he be mentally faithful to himself." – Thomas Paine
"A man's doubts and fears are his worst enemies." – William Wrigley Jr.
"I can accept failure. Everyone fails at something. But I can't accept not trying." – Michael Jordan
"We have grasped the mystery of the atom and rejected the Sermon on the Mount ... The world has achieved brilliance without conscience. Ours is a world of nuclear giants and ethical infants." – General Omar Bradley
"We make a living by what we get. We make a life by what we give." – Winston Churchill
"I always view problems as opportunities in work clothes." – Henry Kaiser, businessman