Arthur E. Waite - The Pictorial Key to the Tarot :
The design is an accommodation, mean or harmony, between several motives mentioned in the first part. The Horned Goat of Mendes, with wings like those of a bat, is standing on an altar. At the pit of the stomach there is the sign of Mercury.
The right hand is upraised and extended, being the reverse of that benediction which is given by the Hierophant in the fifth card. In the left hand there is a great flaming torch, inverted towards the earth. A reversed pentagram is on the forehead.
There is a ring in front of the altar, from which two chains are carried to the necks of two figures, male and female. These are analogous with those of the fifth card, as if Adam and Eve after the Fall. Hereof is the chain and fatality of the material life.
The figures are tailed, to signify the animal nature, but there is human intelligence in the faces, and he who is exalted above them is not to be their master for ever. Even now, he is also a bondsman, sustained by the evil that is in him and blind to the liberty of service.
With more than his usual derision for the arts which he pretended to respect and interpret as a master therein, Eliphas Levi affirms that the Baphometic figure is occult science and magic. Another commentator says that in the Divine world it signifies predestination, but there is no correspondence in that world with the things which below are of the brute.
What it does signify is the Dweller on the Threshold without the Mystical Garden when those are driven forth therefrom who have eaten the forbidden fruit.
P. D. Ouspensky – The Symbolism Of The Таrot :
Black, awful night enveloped the earth. An ominous, red flame burned in the distance. I was approaching a fantastic figure which outlined itself before me as I came nearer to it. High above the earth appeared the repulsive red face of the Devil, with large, hairy ears, pointed beard and curved goats' horns. A pentagram, pointing downwards, shone in phosphoric light between the horns on his forehead. Two large, grey, bat-like wings were spread behind him. He held up one arm, spreading out his bare, fat hand. In the palm I saw the sign of black magic. A burning torch held down-end in his other hand emitted black, stifling smoke. He sat on a large, black cube, gripping it with the claws of his beast-like, shaggy legs.
A man and woman were chained to the cube--the same Man and Woman I saw in the garden, but now they had horns and tails tipped with flame. And they were evidently dissatisfied in spirit, and were filled with protest and repulsion.
"This is a picture of weakness", said the voice, "a picture of falsehood and evil. They are the same man and woman you saw in the garden, but their love ceasing to be a sacrifice, became an illusion. This man and woman forgot that their love is a link in the chain that unites them with eternity, that their love is a symbol of equilibrium and a road to Infinity.
"They forgot that It is a key to the gate of the magic world, the torch which lights the higher Path. They forgot that Love is real and immortal and they subjugated it to the unreal and temporary. And they each made love a tool for submitting the other to himself.
"Then love became dissension and fettered them with iron chains to the black cube of matter, on which sits deceit".
And I heard the voice of the Devil: "I am Evil", he said, "at least so far as Evil can exist in this best of worlds. In order to see me, one must be able to see unfairly, incorrectly and narrowly. I close the triangle, the other two sides of which are Death and Time. In order to quit this triangle it is necessary to see that it does not exist.
"But how to do this is not for me to tell. For I am the Evil which men say is the cause of all evil and which they invented as an excuse for all the evil that they do.
"They call me the Prince of Falsehood, and truly I am the prince of lies, because I am the most monstrous production of human lies".