Knowledge (n.) is to a certain extent a second existence.
Knowledge (n.) of results without their connection is like the doctor's who knows the disease and the cure but not what links them.
Knowledge (n.) arose, like every other organ, only for self-preservation, which is why plants, needing so little, need none at all, and knowledge marks the limit of animality.
Knowledge (n.) is the purer and more correct the more it has freed itself from the will — as that fruit is best which has no after-taste of the soil it grew in.
Knowledge (n.) of the abstract kind adds nothing new — the calculus tells you nothing about the curve you could not see — but it makes what you saw storable, shareable, and usable by many hands.
Knowledge (n.) not worked over in one's own mind is a large library in disorder — less useful than a small one in order; a man only knows what he has pondered.
Knowledge (n.) is a tool the will lit for itself, like any organ; with it came illusion, error and irresolution, ending the infallible sureness with which the will had worked in the dark.
Knowledge (n.) grew to the will as the head to the body: it knows of things only their relations to what we want — where, when, why, whither — and if those were taken away the objects would vanish for it.