More broadly, however, it's a reminder that charity is rarely pure altruism.

She doubted though if it had been pure altruism.

And yet, even if it is largely absent from the natural world, that alone doesn't render pure altruism irrelevant.

It wasn't pure altruism.

It hadn't been out of pure altruism that she'd spent those twelve solid hours compelling Olga Larson to talk better.

Pure egoism and pure altruism are alike impracticable.

"Colonel," said I, when I took leave of him an hour later, "I have armed myself out of pure altruism.