It is better to acquit a thousand guilty persons than to put a single innocent one to death - Moshe ben Maimon

According to his opinion, man should only believe what he can grasp with his intellectual faculties, or perceive by his senses, or what he can accept on trustworthy authority. Beyond this nothing should be believed.

To give a full explanation of the mystic passages of the Bible is contrary to the law and to reason; besides, my knowledge of them is based on reasoning, not on divine inspiration [and is therefore not infallible]. ...It is... possible that my view is wrong, and that I misunderstand passages referred to. ...Those, however, for whom this treatise has been composed, will, on reflecting on it and thoroughly examining each chapter, obtain a clear insight into all that has been clear and intelligible to me. This is the utmost that can be done in treating this subject so to be useful to all without fully explaining it.

Know that for the human mind there are certain objects of perception which are within the scope of its nature and capacity; on the other hand, there are, amongst things which actually exist, certain objects which the mind can in no way and by no means grasp: the gates of perception are closed against it. Further, there are things of which the mind understands one part, but remains ignorant of the other; and when man is able to comprehend certain things, it does not follow that he must be able to comprehend everything.