There must always remain something that is antagonistic to good.

The struggle never actually ends

We like to imagine that if we just fix the right systems or elect the right people, evil will finally be solved. But Plato's observation cuts against this optimism in a way that's worth sitting with. He's suggesting that antagonism itself—the pull toward something destructive—isn't a bug we can patch out of existence. It's structural to how things work. Which sounds pessimistic until you realize what it actually means: you're not failing if you're still struggling against selfishness, laziness, cruelty, or fear. The struggle is the point.

This reframes why moral effort never feels finished. You quit drinking and still crave it sometimes. You build a just system and watch people find loopholes to exploit it. You commit to kindness and catch yourself being petty anyway. Rather than proof that you're broken or the world is broken, this is just the permanent condition. The antagonistic force isn't some external villain—it's woven into human nature and circumstance itself.

The surprising part? This might actually be freeing. If opposition to good is perpetual rather than a temporary problem to solve, you stop waiting for the moment when trying gets easier. You build a life around the friction itself, around staying alert and choosing again tomorrow. The goal isn't to defeat the antagonism. It's to become the kind of person who faces it unflinchingly.