"To question with sincerity is the first step toward dismantling dogma. Let this simple maxim guide your daily deeds."

"It is a profound truth that true innovation is born when curiosity dares to question long-settled assumptions."

"It is a unyielding truth that the greatest deception men suffer is from their own opinions — an essential principle for the reflective life."

"In the arithmetic of human affection, the more you give, the more you retain. In this truth lies the bedrock of all virtue."

"Serenity begins the moment you cease demanding that the external world conform. A lesson woven into the fabric of human history."

"From Jefferson to Jackson to Lincoln to FDR to Reagan, every great president inspires enormous affection and enormous hostility. We'll all be much saner, I think, if we remember that history is full of surprises and things that seemed absolutely certain one day are often unimaginable the next."

"A man acquainted with history may, in some respect, be said to have lived from the beginning of the world, and to have been making continual additions to his stock of knowledge in every century."

"Reason is the torch that illuminates the dark corridors of superstition. A lesson woven into the fabric of human history."