If we do not plant knowledge when young, it will give us no shade when we are old.—Chesterfield.

In reading authors, when you find
Bright passages, that strike your mind,
And which, perhaps, you may have reason
To think on, at another season,
Be not contented with the sight,
But take them down in black and white;
Such a respect is wisely shown,
As makes another's sense one's own.
—Byron.

Early knowledge is very valuable capital with which to set forth in life. It gives one an advantageous start. If the possession of knowledge has a given value at fifty, it has a much greater value at twenty-five; for there is the use of it for twenty-five of the most important years of your life; and it is worth more than a hundred per cent interest. Indeed, who can estimate the interest of knowledge? Its price is above rubies.—Winslow.

Knowledge is
Bought only with a weary care,
And wisdom means a world of pain.
—Joaquin Miller.

The knowledge which we have acquired ought not to resemble a great shop without order, and without an inventory; we ought to know what we possess, and be able to make it serve us in need.—Leibnitz.

Knowledge is power as well as fame.—Rufus Choate.

Knowledge is leagued with the universe, and findeth a friend in all things; but ignorance is everywhere a stranger, unwelcome; ill at ease and out of place.—Tupper.

A Persian philosopher, being asked by what method he had acquired so much knowledge, answered, "By not being prevented by shame from asking questions where I was ignorant."

Every human being whose mind is not debauched, will be willing to give all that he has to get knowledge.—Dr. Johnson.

That learning which thou gettest by thy own observation and experience, is far beyond that which thou gettest by precept; as the knowledge of a traveler exceeds that which is got by reading.—Thomas à Kempis.