Article: During the French Revolution, and soon after, in Germany (by the Left Hegelians), humanism began to refer to an ethical philosophy centered on humankind, without attention to the transcendent or supernatural. The designation Religious Humanism refers to organized groups that sprang up during the late-nineteenth and early twentieth centuries. It is similar to Protestantism, although centered on human needs, interests, and abilities rather than the supernatural. In the Anglophone world, such modern, organized forms of humanism, which are rooted in the 18th-century Enlightenment, have to a considerable extent more or less detached themselves from the historic connection of humanism with classical learning and the liberal arts.

Question: What do current tenants humanism have their origins in?
18th-century Enlightenment