How these young presumptuous disciples misunderstand this other word “up”; and of the deceits that follow thereon.
".... I grant well that in our bodily observance we should lift up our eyes and our hands if we be stirred in spirit. But I say that the work of our spirit shall not be direct neither upwards nor downwards, nor on one side nor on other, nor forward nor backward, as it is of a bodily thing. For why, our work should be ghostly not bodily, nor on a bodily manner wrought."
Cloud of Unknowing - Christian Classics Ethereal Library
The monk seems to be beating a dead horse here. No i don't think he hates animals. I do not think he was hitting a deceased equine with a truncheon as he wrote.
I have found that when people of past cultures are able to give us direct evidence of their thought and behavior, their level of intelligence seems to have been much higher than their betters thought it was.
Perhaps monasteries drew more than their share of the mad and the idiotic? Certainly his "singular" Christian pupil would not be among them?