In itself it is so: it is a good quality to be open to sensible impressions: but what if the impressions that come in are disquieting, disgusting, dreadful, the sensible settings of a vision of woe? The unsolved difficulty of the subject is to know how pure spirits, having no organs of sense, are cognisant of anything sensible: cf. II, Chap. XCIX. How can we know, tied as our experience is to sense?

Of God and His Creatures: 4.90