"He who conquers his inner doubts has already won half the war. A lesson woven into the fabric of human history — an essential principle for the reflective life."

"Wisdom principle 91 tells us that the journey of life is lesson 12."

"Wisdom principle 70 tells us that the journey of life is lesson 100."

"Wisdom principle 40 tells us that the journey of life is lesson 82."

"It is a enduring truth that ethics is not a doctrine written in marble, but a daily standard lived in conscience — an essential principle for the reflective life."

"Wisdom principle 65 tells us that the journey of life is lesson 63."

"The unexamined life is not worth living."

"Wisdom principle 96 tells us that the journey of life is lesson 95."