As, therefore, the mind of man is admirably calculated for the science of things and the consistency of life, it embraces knowledge most especially. And it loves that { ~GREEK SMALL LETTER KAPPA~}{ ~GREEK SMALL LETTER ALPHA~}{ ~GREEK SMALL LETTER TAU~}{ ~GREEK SMALL LETTER ALPHA WITH OXIA~}{ ~GREEK SMALL LETTER LAMDA~}{ ~GREEK SMALL LETTER ETA~}{ ~GREEK SMALL LETTER PSI~}{ ~GREEK SMALL LETTER IOTA~}{ ~GREEK SMALL LETTER FINAL SIGMA~}, (which we, as I have said, will call _comprehension_, translating the word literally,) for its own sake, (for there is nothing more sweet than the light of truth,) and also because of its use; on which account also it uses the senses, and creates arts, which are, as it were, second senses; and it strengthens philosophy itself to such a degree that it creates virtue, to which single thing all life is subordinate. Therefore, those men who affirm that nothing can be comprehended, take away by their assertion all these instruments or ornaments of life; or rather, I should say, utterly overturn the whole of life, and deprive the animal itself of mind (_animo_), so that it is difficult to speak of their rashness as the merits of the case require.

Nor can I sufficiently make out what their ideas or intentions really are. For sometimes, when we address them with this argument,--that if the doctrines which we are upholding are not true, then everything must be uncertain: they reply,--Well, what is that to us? is that our fault? blame nature, who, as Democritus says, has buried truth deep in the bottom of the sea.

The Academic Questions — Part 56

But others defend themselves more elegantly, who complain also that we accuse them of calling everything uncertain; and they endeavour to explain how much difference there is between what is uncertain and what cannot be perceived, and to make a distinction between them. Let us, then, now deal with those who draw this distinction, and let us abandon, as incurable and desperate, those who say that everything is as uncertain as whether the number of the stars be odd or even. For they contend, (and I noticed that you were especially moved by this,) that there is something probable, and, as I may say, likely; and that they adopt that likelihood as a rule in steering their course of life, and in making inquiries and conducting discussions.

The Academic Questions — Part 56