Inhumanity, n. One of the signal and characteristic qualities of humanity.
The Unabridged Devil's DictionaryYou don't have to teach people how to be human. You have to teach them how to stop being inhuman.
Eldridge CleaverTo all those who walk the path of human cooperation war must appear loathsome and inhuman.
Alfred AdlerThe more inhuman we became the more we understood each other as humans.
Caged: Memoirs of a Cage-Fighting PoetMathematics has the inhuman quality of starlight, brilliant and sharp, but cold.
Levels of Infinity: Selected Writings on Mathematics and Philosophy