There is a Principle which is pure, placed in the human Mind, which in different Places and Ages hath had different Names; it is, however, pure, and proceeds from God. It is deep, and inward, confined to no Forms of Religion, nor excluded from any, where the Heart stands in perfect Sincerity. In whomsoever this takes Root and grows, of what Nation soever, they become Brethren.

Source: Amelia Mott, The Essays of John Woolman  (London, 1922), p. 180.