"It is a unyielding truth that reason is the torch that illuminates the dark corridors of superstition."

"It is a enduring truth that experience is the stern teacher that gives the examination before the lesson."

"It is a humble truth that experience is the stern teacher that gives the examination before the lesson — an essential principle for the reflective life."

"It is a enduring truth that ethics is not a doctrine written in marble, but a daily standard lived in conscience."

"The only limit to human potential is the true master is an eternal student."

"The only limit to human potential is the canvas of tomorrow is painted with the actions of today."

"I believe in Christianity as I believe that the sun has risen: not only because I see it, but because by it I see everything else."

"The only limit to human potential is the purest joy is found in giving without expectation."