(l) The Biological Value of Knowledge.

587.

It might seem as though I had evaded the question concerning "certainty". The reverse is true: but while raising the question of the criterion of certainty, I wished to discover the weights and measures with which men had weighed heretofore—and to show that the question concerning certainty is already in itself a dependent question, a question of the second rank.

588.

The question of values is more fundamental than the question of certainty: the latter only becomes serious once the question of values has been answered.

Being and appearance, regarded psychologically, yield no "Being in itself," no criterion for reality, but only degrees of appearance, measured according to the strength of the sympathy which we feel for appearance.

There is no struggle for existence between ideas and observations, but only a struggle for supremacy—the vanquished idea is not annihilated, but only driven to the background or subordinated. There is no such thing as annihilation in intellectual spheres.

589.

"End and means"
"Cause and effect"
"Subject and object"
"Action and suffering"
"Thing-in-itself and
appearance"

As interpretations (not as established facts)—and in what respect were they perhaps necessary interpretations? (as "preservative measures")—all in the sense of a Will to Power.