Here is a delicious quote from St. Cyril of Jerusalem (circa A.D. 387) on communion in both kinds and reverence for the sacred species. This quote comes from A Manuel for Confessors by Belton.
"Make thy left hand a throne for the right, as for that which is to receive a king. And hollowing thy palm receive the Body of Christ, saying over it the Amen. Hallow then with care thine eyes by the touch of the holy Body, and partake of it, giving heed lest thou lose any part of it; for whatever thou shouldest lose would evidently be a loss to thee as from one of thine own members. For tell me, if any one gave thee grains of gold, wouldest thou not hold them with all care, taking heed lest thou shouldest lose any of them and suffer loss? Wilt thou not much more carefully be in thy guard lest a crumb fall from thee of what is more precious than gold and precious stones? Then, after thou hast made thy communion of the Body of Christ, draw near also to the cup of His Blood, not stretching out thy hands, but bending and in an attitude of reverence and worship saying the Amen, hallow thyself by partaking also of the Blood of Christ."
