of long familiarity with passages of the Bible, which they are accustomed to respect and to receive as true, and the literal sense of which implies the corporeality of God and other false notions; in truth, however, these words were employed as figures and metaphors for reasons to be mentioned below. Do not imagine that what we have said of the insufficiency of our understanding and of its limited extent is an assertion founded only on the Bible: for philosophers likewise assert the same, and perfectly understand it,- without having regard to any religion or opinion. It is a fact which is only doubted by those who ignore things fully proved. This chapter is intended as an introduction to the next.
CHAPTER XXXII
You must consider, when reading this treatise, that mental perception, because connected with matter, is subject to conditions similar to those to which physical perception is subject. That is to say, if your eye looks around, you can perceive all that is within the range of your vision: if, however, you overstrain your eye, exerting it too much by attempting to see an object which is too distant for your eye, or to examine writings or engravings too small for your sight, and forcing it to obtain a correct perception of them, you will not only weaken your sight with regard to that special object, but also for those things which you otherwise are able to perceive: your eye will have become too weak to perceive what you were able to see before you exerted yourself and exceeded the limits of your vision.
The same is the case with the speculative faculties of one who devotes himself to the study of any science. If a person studies too much and exhausts his reflective powers, he will be confused, and will not be able to apprehend even that which had been within the power of his apprehension. For the powers of the body are all alike in this respect.
The mental perceptions are not exempt from a similar condition. If you admit the doubt, and do not persuade yourself to believe that there is a proof for things which cannot be demonstrated, or to try at once to reject and positively to deny an assertion the opposite of which has never been proved, or attempt to perceive things which are beyond your perception, then you have attained the highest degree of human perfection, then you are like R. Akibha, who" in peace entered [the study of these theological problems], and came out in peace." If, on the other hand, you attempt to exceed the limit of your intellectual power, or at once to reject things as impossible which have never been proved to be impossible, or which are in fact possible, though their possibility be very remote, then you will be like Elisha Aber; you will not only fail to become perfect, but you will become exceedingly imperfect. Ideas founded on mere imagination will prevail over you, you will incline toward defects, and toward base and degraded habits, on account of the confusion which troubles the mind, and of the dimness of its light, just as weakness of sight causes invalids to see many kinds of unreal images, especially when they have looked for a long time at dazzling or at very minute objects.
Respecting this it has been said," Hast thou found honey? eat so much as is sufficient for thee, lest thou be filled therewith, and vomit it" (Prov. xxv. 16). Our Sages also applied this verse to Elisha Aber, How
