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.
George SantayanaThe tide of evolution carries everything before it, thoughts no less than bodies, and persons no less than nations.
George SantayanaFor an idea ever to be fashionable is ominous, since it must afterwards be always old fashioned
George Santayana