Many men are stored full of unused knowledge. Like loaded guns that are never fired off, or military magazines in times of peace, they are stuffed with useless ammunition.

The raft of knowledge ferries the worst sinner to safety.

He that increaseth knowledge increaseth sorrow.

The paradox of knowledge is not confined to the small, atomic scale; on the contrary, it is as cogent on the scale of man, and even of the stars.

Knowledge is a comfortable and necessary retreat and shelter for us in an advanced age; and if we do not plant it while young, it will give us no shade when we grow old.

To know a little of anything gives neither satisfaction nor credit, but often brings disgrace or ridicule.

Learning without thought is labour lost; thought without learning is perilous.

Knowledge is power. Unfortunate dupes of this saying will keep on reading, ambitiously, till they have stunned their native initiative, and made their thoughts weak.

It is knowledge that influences and equalizes the social condition of man; that gives to all, however different their political position, passions which are in common, and enjoyments which are universal.

There is no subject so old that something new cannot be said about it.