Now, if you notice how the swan, putting its neck down into the deep water, brings up food for itself from below, then you will discover the wisdom of the Creator, in that He gave it a neck longer than its feet for this reason, that it might, as if lowering a sort of fishing line, procure the food hidden in the deep water.
Exegetic Homilies (The Fathers of the Church, Volume 46) (ed. CUA Press, 2010) - ISBN: 9780813211466