The Holy Ghost took the likeness of a dove, as being more than other animals susceptible of love. All other forms of righteousness which the servants of God have in truth and verity, the servants of the Devil have in spurious imitation; the love of the Holy Spirit alone an unclean spirit cannot imitate. And the Holy Ghost has therefore reserved to Himself this special manifestation of love, because by no testimony is it so clearly seen where He dwells as by the grace of love.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
