The Book of Beliefs and Opinions

The Book of Beliefs and Opinions (Judeo-Arabic: כתאב אלאמאנאת ואלאעתקאדאת; Arabic: كتاب الأمانات والاعتقادات, romanizedKitāb al-Amānāt wa l-Iʿtiqādāt) is a book written by Saadia Gaon (completed 933) which is the first systematic presentation and philosophic foundation of the dogmas of Judaism.

The work was originally in Judeo-Arabic in Hebrew alphabet with quotations from the Torah. The first Hebrew translation was done in 1186 by Judah ben Saul ibn Tibbon, titled Emunot ve-Deot (Hebrew: אמונות ודעות Beliefs and Opinions). An unabridged translation into English by Samuel Rosenblatt was published in 1948.

An introduction precedes the work, which consists of ten chapters, and it was completed in 933.