"The teacher's life should have three periods, study until twenty-five, investigation until forty, profession until sixty, at which age I would have him retired on a double allowance."
"The philosophies of one age have become the absurdities of the next, and the foolishness of yesterday has become the wisdom of tomorrow."
"To have striven, to have made the effort, to have been true to certain ideals - this alone is worth the struggle."
"We are here to add what we can to life, not to get what we can from life."
"The value of experience is not in seeing much, but in seeing wisely."
