Judah Halevi,
Kitab al Khazari (Kuzari) — Part Five
“ The soul does not gain its knowledge empirically. For the results of experience cannot be judged apodictically. No one can assert apodictically that no man can move his ears, just as we may judge that every human being feels; that every one who feels, lives; that every one who lives is a substance; that the whole is larger than a part, and other fundamental truths. For our belief in the correctness of opinions is not regulated by instruction, otherwise we should come to an endless chain of conclusions. But then the rational soul comes into connexion with the divine emanation. ”
