“An unexamined life is not worth living.”

“By three methods we may learn wisdom: First, by reflection, which is noblest; Second, by imitation, which is easiest; and third by experience, which is the bitterest.”

“Wherever you go, go with all your heart.”

“Common sense is the genius of humanity.”

“Life belongs to the living, and he who lives must be prepared for changes.”

“Courage is knowing what not to fear.”

“Beware the barrenness of a busy life.”

“There are only two mistakes one can make along the road to truth; not going all the way, and not starting.”

“It is better to travel well than to arrive.”

“Three things cannot be long hidden: the sun, the moon, and the truth.”

“It’s not what happens to you, but how you react to it that matters.”

“Make the best use of what is in your power, and take the rest as it happens.”

“Common sense is not so common.”