Not always, if we are talking about a specific humanity, such as ''The humanity of Christ/crimes against the humanity (crimes against humanity is also possible, but they may refer to the given population at the time the regulations were being made).
Or, as in the second link, "the humanity" as a given group, the society of a given time.
So, to my thinking in an essay one could use the word humanity
in a general way, and the humanity
if referring to a, say, society of a given century (or span of some centuries, a certain age/era etc). It goes with what the author want to say.
But I agree that at first, one should not use the
in the same sentence.
Context is the name of the game here.http://www.memo.fr/en/article.aspx?ID=THE_GUE_005http://charleseisenstein.net/a-world-cr ... -of-truth/
The first of these world-creating stories is the Story of Ascent. It is our story of the people. It says the humanity has risen from a state of nature, a state of scientific ignorance and technological impotence, to becoming nature’s lords and masters.