The noble simplicity in the works of nature only too often originates in the noble shortsightedness of him who observes it.

People who have read a good deal rarely make great discoveries. I do not say this in excuse of laziness, but because invention presupposes an extensive independent contemplation of things.

Much reading has brought upon us a learned barbarism.

Nothing puts a greater obstacle in the way of the progress of knowledge than thinking that one knows what one does not yet know.

I have never yet met anyone who did not think it was an agreeable sensation to cut tinfoil with scissors.

If all mankind were suddenly to practice honesty, many thousands of people would be sure to starve.

Too much is unwholesome.