I quote Immanuel Kant in my preface, defining enlightenment as mankind coming out of its self-imposed immaturity.
Finally there was the atomic bomb (and the Cold War it created): machine threatened to annihilate all of mankind.
The news is a small but real step forward for science and a smaller step for mankind.
"the human race," c.1300, earlier man-kende (early 13c.), from man (n.) + kind (n.). Replaced Old English mancynn "human race." Also used occasionally in Middle English for "male persons" (late 14c.), but otherwise preserving the original gender neutrality of man (n.). For "menfolk, the male sex," menkind (late 14c.) and menskind (1590s) have been used.