Religious people are an unkindly lot. Poor human nature cannot do everything; and kindness is too often left uncultivated, because men do not sufficiently understand its value. Men may be charitable, yet not kind; merciful, yet not kind; self-denying, yet not kind. […] Kindness, as a grace, is certainly not sufficiently cultivated, while the self-gravitating, self-contemplating, self-inspecting parts of the spiritual life are cultivated too exclusively.
One immediately assumes that charity is a sort of kindness, as is mercy. Faber suggests that it isn’t. Perhaps I don’t understand what Faber means by “kindness” after all.
The quoted excerpt is from Father Frederick Faber’s Spiritual Conferences, excerpted here.