US "historian, author".
"He humanized knowledge and speculative thinking; produced, with wife Ariel, 11-volume 1926 Pulitzer winner "Story of Civilization.""
Our knowledge is a receding mirage in an expanding desert of ignorance.
The trouble with most people is that they think with their hopes and fears rather than with their minds.
Nothing is new except arrangement.
"Every vice was once a virtue, and may become respectable again, just as hatred becomes respectable in time of war."
"In my youth I stressed freedom, and in my old age I stress order. I have made the great discovery that liberty is a product of order."