“The falseness of a judgment is for us not necessarily an objection to a judgment.”Friedrich Nietzsche · Dincolo de bine și de rău · 1886 · aforismul 4
An error that sustains you can outweigh a truth that paralyzes you.
Nietzsche attacks the philosophical habit of rejecting any idea simply because it is inaccurate. He asks what a judgment does to life: some errors sustain us, give us energy or direction. The mechanism is pragmatic — usefulness replaces correctness as the standard. An optimistic belief that effort pays off may be statistically shaky, yet it keeps a person active and resistant to despair.
Nietzsche does not say truth does not matter. He changes the order of the questions. Before asking whether a belief is true, ask what it does to you. A mistaken idea can keep you moving; a correct one can paralyze you. Think of someone who believes their mistakes can be repaired. That may not always be true. But the belief makes them try again instead of running away. Here a practical skill appears: monitoring your beliefs by their effects, as if they were tools. Some deserve to be kept precisely because they work. But how do you tell a nourishing error from one that truly deceives you?
Why it matters It helps you avoid discarding workable ideas just because they are not airtight, especially when choosing beliefs that keep you acting.