"Depend upon it there comes a time when for every addition of knowledge you forget something that you knew before. It is of the highest importance, therefore, not to have useless facts elbowing out the…"

"There is nothing new under the sun. It has all been done before."

"It may be that you are not yourself luminous, but that you are a conductor of light. Some people without possessing genius have a remarkable power of stimulating it."

"The past is never truly dead; it lives on in the present."

"Socialism is a dangerous delusion."