“Uncertainty is the refuge of hope.”

“It is not what he has, nor even what he does, which directly expresses the worth of a man, but what he is.”

“all appears to change when we change”

“Conquering any difficulty always gives one a secret joy, for it means pushing back a boundary line and adding to one's liberty.”

“Philosophy means the complete liberty of the mind.”

“I begin to realize that my memory is a great catacomb, and that below my actual standing-ground there is layer after layer of historical ashes. Is the life of mind something like that of great tree...”

“A good lover? One percent talent and ninety nine percent hard work.”

“No one plows the field just by thinking about it.”

“We have glorified wealth and freedom so much that it is impossible for most of us to truly believe that a man can truly be happy in a shack or within the confines of a prison cell.”