The leaning to pantheism is established by the discovery that the disputed lines, "Zeus is sky, earth, and heaven: Zeus is all things, yea, greater than all things" (Frag. 443), belonged to the lost tragedy of the Heliades (Haigh, Tragic Drama of the Greeks, 1896, p. 88). For the pessimism see the Prometheus, 247-51. The anti-anthropomorphism is further to be made out from the lines ascribed to Æschylus by Justin Martyr (De Monarchia, c. 2) and Clemens Alexandrinus (Stromata, v, 14). They are expressly pantheistic; but their genuineness is doubtful. The story that Æschylus was nearly killed by a theatre audience on the score that he had divulged part of the mysteries in a tragedy (Haigh, The Attic Theatre, 1889, p. 316; Tragic Drama, pp. 49-50) does not seem to have suggested to Aristotle, who tells it (Nicomachean Ethics, iii, 2), any heterodox intention on the tragedian's part; but it is hard to see an orthodox believer in the author either of the Prometheus, wherein Zeus is posed as brutal might crucifying innocence and beneficence, or of the Agamemnon, where the father, perplexed in the extreme, can but fall back helplessly on formulas about the all-sufficiency of Zeus when called upon to sacrifice his daughter. Cp. Haigh, Tragic Drama, p. 86 sq. "Some critics," says Mr. Haigh (p. 88), "have been led to imagine that there is in Æschylus a double Zeus--the ordinary God of the polytheistic religion and the one omnipotent deity in whom he really believed. They suppose that he had no genuine faith in the credibility of the popular legends, but merely used them as a setting for his tragedies; and that his own convictions were of a more philosophical type," as seen in the pantheistic lines concerning Zeus. To this Mr. Haigh replies that it is "most improbable that there was any clear distinction in the mind of Æschylus" between the two conceptions of Zeus; going on, however, to admit that "much, no doubt, he regarded as uncertain, much as false. Even the name 'Zeus' was to him a mere convention." Mr. Haigh in this discussion does not attempt to deal with the problem of the Prometheus.