Nietzsche is very suspicious of metaphysical abstractions. Nietzsche introduces these ideas in more radical language than Locke or Mill. Using the texts, find the common ground on which Locke, Mill, and Nietzsche rest. Truth is dynamic and vital. It is the result of a process.
Truth has a manifold of meanings.
Truth is a human construct. Nietzsche looks for the origins of truths. These origins are found in a miasma of illusions, lies, and deceptions. Nietzsche is terrified by the roots of truth he uncovers in his researches. Also, Nietzsche discovers that truths have a history.