That there was a good deal of this species of tired or stoical semi-rationalism among the Jews of the Hellenistic period may be inferred from various traces. The opening verses of the thirtieth chapter of the book of Proverbs, attributed to Agur, son of Jakeh, are admittedly the expression of a skeptic's conviction that God cannot be known, [378] the countervailing passages being plainly the additions of a believer. Agur's utterances probably belong to the close of the third century B.C. Here, as in Job, there are signs of Arab influence; [379] but at a later period the main source of skepticism for Israel was probably the Hellenistic civilization. It is told in the Talmud that in the Maccabean period there came into use the formula, "Cursed be the man that cherisheth swine; and cursed be the man that teacheth his son the wisdom of the Greeks"; and there is preserved the saying of Rabbi Simeon, son of Gamaliel, that in his father's school five hundred learnt the law, and five hundred the wisdom of the Greeks. [380] Before Gamaliel, the Greek influence had affected Jewish philosophic thought; and it is very probable that among the Sadducees who resisted the doctrine of resurrection there were some thinkers of the Epicurean school. To that school may have belonged the unbelievers who are struck at in several Rabbinical passages which account for the sin of Adam as beginning in a denial of the omnipresence of God, and describe Cain as having said: "There is no judgment; there is no world to come, and there is no reward for the just, and no punishment for the wicked." [381] But of Greek or other atheism there is no direct trace in the Hebrew literature; [382] and the rationalism of the Sadducees, who were substantially the priestly party, [383] was like the rationalism of the Brahmans and the Egyptian priests--something esoteric and withheld from the multitude. In the apocryphal Wisdom of Solomon, which belongs to the first century A.C., the denial of immortality, so explicit in Ecclesiastes, is treated as a proof of utter immorality, though the deniers are not represented as atheists. [384] They thus seem to have been still numerous, and the imputation of wholesale immorality to them is of course not to be credited; [385] but there is no trace of any constructive teaching on their part.