Philosophy appears to consist of two subjects, knowledge and conjecture, and of nothing more. Knowledge cannot come from the understanding, nor be apprehended by thought; because
Let us return to the example before mentioned. Come, let us conjecture about the state and character of that city which is unknown to us in all respects except in name. It is probable that it is situated on a plain, with walls of stone, lofty buildings, many streets, magnificent and highly adorned temples. Let us describe, if you please, the customs and deportment of the citizens. But when we shall have described these, another will make opposite statements; and when he also shall have concluded, a third will arise, and others after him; and they will make very different conjectures to those of ours. Which therefore of all is more true? Perhaps none of them. But all things have been mentioned which the nature of the circumstances admits, so that some one of them must necessarily be true. But it will not be known who has spoken the truth. It may possibly be that all have in some degree erred in their description, and that all have in some degree attained to the truth. Therefore we are foolish if we seek this by disputation; for some one may present himself who may deride our conjectures, and esteem us as mad, since we wish to conjecture the character of that which we do not know. But it is unnecessary to go in quest of remote cases, from which perhaps no one may come to refute us. Come, let us conjecture what is now going on in the forum, what in the senate-house. That also is too distant. Let us say what is taking place with the interposition of a single wall; 375 no one can know this but he who has heard or seen it. No one therefore ventures to say this, because he will immediately be refuted not by words, but by the presence of the fact itself. But this is the very thing which philosophers do, who discuss what is taking place in heaven, but think that they do that with impunity, because there is no one to refute their errors. But if they were to think that some one was about to descend who would prove them to be mad and false, they would never discuss those subjects at all which they cannot possibly know. Nor, however, is their shamelessness and audacity to be regarded as more successful because they are not refuted; for God refutes them to whom alone the truth is known, although He may seem to connive at their conduct, and He reckons such wisdom of men as the greatest folly.
It is evident that the Academy took its rise from the doctrine of Socrates. Plato, the disciple of Socrates, founded the Academy. However excellent their system may appear to many, the opinion of Carneades the Stoic seems just, who said that “the wise man who is about to conjecture is about to err, for he who conjectures knows nothing.” Thus knowledge is taken from them by themselves.—Betul.
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