(noun) The state of being indifferent.
"But nothing is so strange when one is in love (and what was this except being in love?) as the complete indifference of other people."
"I looked up at the mass of signs and stars in the night sky and laid myself open for the first time to the benign indifference of the world."
"The opposite of love is not hate, it's indifference. The opposite of art is not ugliness, it's indifference. The opposite of faith is not heresy, it's indifference. And the opposite of life is not death, it's indifference."
"Neither love nor terror makes one blind: indifference makes one blind."
"Science may have found a cure for most evils; but it has found no remedy for the worst of them all - the apathy of human beings."