Intellectual Growth Quotes

"When you know a thing, to hold that you know it, and when you do not know a thing, to allow that you do not know it - this is knowledge." "He who learns but does not think, is lost! He who thinks but does not learn is in great danger." "They must often change, who would be constant in happiness or wisdom." "To write well, express yourself like the common people, but think like a wise man." "It is the mark of an educated mind to be able to entertain a thought without accepting it."