“Sometimes doing your best is not good enough. Sometimes you must do what is required.”

“It is not enough that we do our best; sometimes we must do what is required.”

“It's no use saying, "We are doing our best." You have got to succeed in doing what is necessary.”

“You have enemies? Good. That means you've stood up for something, sometime in your life.”

“Mr Churchill, to what do you attribute your success in life?Conservation of energy. Never stand up when you can sit down. And never sit down when you can lie down.”

“The greatest lesson in life is to know that even fools are right sometimes.”

“The game of life does not proceed like a mathematical calculation on the principle that two and two make four. Sometimes they make five, or minus four, and sometimes the blackboard topples over in the middle of the sum and the pedagogue is left with a black eye. ”