Dandolo, the Doge of Venice, won battles at ninety-four, and refused a crown at ninety-six. Wellington planned and superintended fortifications at eighty. Bacon and Humboldt were enthusiastic students to the last gasp. Wise old Montaigne was shrewd in his gray-beard wisdom and loving life, even in the midst of his fits of gout and colic.

Dr. Johnson's best work, "The Lives of the Poets," was written when he was seventy-eight. Defoe was fifty-eight when he published "Robinson Crusoe." Newton wrote new briefs to his "Principia" at eighty-three. Plato died writing, at eighty-one. Tom Scott began the study of Hebrew at eighty-six. Galileo was nearly seventy when he wrote on the laws of motion. James Watt learned German at eighty-five. Mrs. Somerville finished her "Molecular and Microscopic Science" at eighty-nine. Humboldt completed his "Cosmos" at ninety, a month before his death. Burke was thirty-five before he obtained a seat in Parliament, yet he made the world feel his character. Unknown at forty, Grant was one of the most famous generals in history at forty-two. Eli Whitney was twenty-three when he decided to prepare for college, and thirty when he graduated from Yale; yet his cotton-gin opened a great industrial future for the Southern States. What a power was Bismarck at eighty! Lord Palmerston was an "Old Boy" to the last. He became Prime Minister of England the second time at seventy-five, and died Prime Minister at eighty-one. Galileo at seventy-seven, blind and feeble, was working every day, adapting the principle of the pendulum to clocks. George Stephenson did not learn to read and write until he had reached manhood. Some of Longfellow's, Whittier's, and Tennyson's best work was done after they were seventy.

At sixty-three Dryden began the translation of the "Aeneid." Robert Hall learned Italian when past sixty, that he might read Dante in the original. Noah Webster studied seventeen languages after he was fifty. Cicero said well that men are like wine: age sours the bad and improves the good.

With enthusiasm we may retain the youth of the spirit until the hair is silvered, even as the Gulf Stream softens the rigors of northern Europe.

"How ages thine heart,—towards youth? If not, doubt thy fitness for thy work."

CHAPTER XIV.

"ON TIME," OR THE TRIUMPH OF PROMPTNESS

"On the great clock of time there is but one word—NOW."

Note the sublime precision that leads the earth over a circuit of five hundred millions of miles back to the solstice at the appointed moment without the loss of one second,—no, not the millionth part of a second,—for ages and ages of which it traveled that imperiled road.—EDWARD EVERETT.