There is frequently more to be learned from the unexpected questions of a child than the discourses of men.

For those who either perceive but dully, or retain the ideas that come into their minds but ill, who cannot readily excite or compound them, will have little matter to think on.

Books seem to me to be pestilent things, and infect all that trade in them...with something very perverse and brutal. Printers, binders, sellers, and others that make a trade and gain out of them have universally so odd a turn and corruption of mind that they have a way of dealing peculiar to themselves, and not conformed to the good of society and that general fairness which cements mankind.

It is practice alone that brings the powers of the mind, as well as those of the body, to their perfection.

Certain subjects yield a general power that may be applied in any direction and should be studied by all.

These two, I say, viz. external material things, as the objects of SENSATION, and the operations of our own minds within, as the objects of REFLECTION, are to me the only originals from whence all our ideas take their beginnings.

There are a thousand ways to Wealth, but only one way to Heaven.