BIBLIOGRAPHY 433 NOTES 439 LIST OF BIBLICAL AND RABBINIC PASSAGES 449 INDEX 451 INTRODUCTION The philosophical movement in mediæval Jewry was the result of the desire and the necessity, felt by the leaders of Jewish thought, of reconciling two apparently independent sources of truth. In the middle ages, among Jews as well as among Christians and Mohammedans, the two sources of knowledge or truth which were clearly present to the minds of thinking people, each claiming recognition, were religious opinions as embodied in revealed documents on the one hand, and philosophical and scientific judgments and arguments, the results of independent rational reflection, on the other. Revelation and reason, religion and philosophy, faith and knowledge, authority and independent reflection are the various expressions for the dualism in mediæval thought, which the philosophers and theologians of the time endeavored to reduce to a monism or a unity. Let us examine more intimately the character and content of the two elements in the intellectual horizon of mediæval Jewry. On the side of revelation, religion, authority, we have the Bible, the Mishna, the Talmud. The Bible was the written law, and represented literally the word of God as revealed to lawgiver and prophet; the Talmud (including the Mishna) was the oral law, embodying the unwritten commentary on the words of the Law, equally authentic with the latter, contemporaneous with it in revelation, though not committed to writing until many ages subsequently and until then handed down by word of mouth; hence depending upon tradition and faith in tradition for its validity and acceptance. Authority therefore for the Rabbanites was two-fold, the authority of the direct word of God which was written down as soon as communicated, and about which there could therefore be no manner of doubt; and the authority of the indirect word of God as transmitted orally for many generations before it was written down, requiring belief in tradition. By the Karaites tradition was rejected, and there remained only belief in the words of the Bible.