"I sleep with my eyes open."

"The human soul has greater need of the ideal than of the real. It is by the real that we exist; it is by the ideal that we live."

"Forty years is the old age of youth; fifty is the youth of old age."

"Love is a portion of the soul itself, and it is of the same nature as the soul. It is an ardent, celestial, inextinguishable flame."

"When a man knows how to love, he knows how to live."