"He who opens a school door, closes a prison."

"Civilization is a disease."

"The greatest happiness of life is the conviction that we are loved; loved for ourselves, or rather, loved in spite of ourselves."

"Love is like a tree, it grows of its own accord, it puts down deep roots into our whole being."

"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."