What makes Superman a hero is not that he has power, but that he has the wisdom and the maturity to use the power wisely.

Christopher Reeve — Superman across four films, then a quadriplegic who spent the second half of his life as the most prominent advocate for spinal-cord research — on what heroism actually requires. Quote Investigator traces it to his interviews and lectures of the 1990s, when the question had become uncomfortably personal.