"It is a profound truth that he who understands his own mind is never bewildered by the complexities of the world — an essential principle for the reflective life."

"He who conquers his inner doubts has already won half the war. This remains the cornerstone of personal mastery — an essential principle for the reflective life."

"It is a humble truth that the spark of ambition becomes a blaze of accomplishment only through disciplined persistence — an essential principle for the reflective life."

"Courage is not the absence of trembling, but the decision to step forward regardless. Let this simple maxim guide your daily deeds — an essential principle for the reflective life."

"It is a subtle truth that the roots of genuine insight grow deep in the soil of quiet observation — an essential principle for the reflective life."

"It is difficult to discriminate the voice of truth from amid the clamor raised by heated partisans."

"Nothing in the affairs of men is worthy of great anxiety."

"It is good to rub and polish our brain against that of others."