But we can still see the forest despite the trees. We can talk about forestry and tree farms and the future. What is true of trees is true of the whole complicated world in which we live. Even spiritual truths come to be known by us in this way. We know what He was talking about even though justice is not a material thing.
Love continues to grow in a well-married couple even when all physical charm has gone.
A man can love his country, and his love is certainly not a physical attraction. It is a thing of the spirit. Unless we had a spirit within us, we could not even think of these spiritual things. This soul is not matter or anything physical. As the examples have shown, it sometimes begins with matter but escapes from it into the abstract and general.