“Progress, far from consisting in change, depends on retentiveness. When change is absolute there remains no being to improve and no direction is set for possible improvement: and when experience is not retained, as among savages, infancy is perpetual. Those who cannot remember the past are condemned to repeat it. In the first stage of life the mind is frivolous and easily distracted; it misses progress by failing in consecutiveness and persistence. This is the condition of children and barbarians, in which instinct has learned nothing from experience.”

“Those who cannot remember the past, are condemned to repeat it.”

“Progress is impossible without change; and those who cannot change their minds cannot change anything.”

“We must welcome the future, remembering that soon it will be the past; and we must respect the past, remembering that it was once all that was humanly possible.”

“A habitual indulgence in the inarticulate is a sure sign of the philosopher who has not learned to think, the poet who has not learned to write, the painter who has not learned to paint, and the impression that has not learned to express itself--all of which are compatible with an immensity of genius in the inexpressible soul.”

“There is wisdom in turning as often as possible from the familiar to the unfamiliar: it keeps the mind nimble, it kills prejudice, and it fosters humor.”

“To be interested in the changing seasons is . . . a happier state of mind than to be hopelessly in love with spring.”