'In the whole known universe we are the only species that takes responsibility for the others; the only species that demonstrates the slightest interest in naming, tending, and conserving the others; that indeed is accountable for the stewardship of the others; and the only species that feels guilt (however fitfully and hypocritically) when its stewardship fails.'
Andy Crouch in John G Stackhouse Jr., Why You're Here: Ethics for the Real World, p.23.