C.S. Lewis on reason and emotions

Because our approvals and disapprovals are thus recognitions of objective value or responses to objective order, therefore emotional states can be in harmony with reason (when we feel liking for what ought to be approved) or out of harmony with reason (when we perceive that liking is due but cannot feel it). No emotion is, in itself, a judgment: in that sense all emotions and sentiments are alogical. But they can be reasonable or unreasonable as they conform to Reason or fail to conform. The heart never takes the place of the head: but it can, and should, obey it.
– C.S. Lewis, The Abolition of Man (1944; Reprint Touchstone, 1996), p. 31-32