It is their own saying, that a man must only have sense and be flesh and blood, and pleasure will appear to be good. Wherefore also it will seem good to him who withholds his assent. For he also participates of sense, and is made of flesh and blood, and as soon as he has conceived an imagination of good, desires it and does all things that it may not escape from him; but as much as possibly he can, he will keep himself with that which is agreeable to his nature, being drawn by natural and not by geometrical constraints. For these goodly, gentle, and tickling motions of the flesh are, without any teacher, attractive enough of themselves — even as these men forget not to say — to draw even him who will not in the least acknowledge and confess that he is softened and rendered pliable by them. But how comes it to pass, perhaps you will say, that he who is thus doubtful and withholds his assent hastens not away to the mountain, instead of going to the bath? Or that, rising up to go forth into the market-place, he runs not his head against the wall, but takes his way directly to the door? Do you ask this, who hold all the senses to be infallible, and the apprehensions of the imagination certain and true? It is because the bath appears to him not a mountain, but a bath; and the door seems not a wall, but a door; and the same is to be said of every other thing. For the doctrine of retention does not pervert the sense, nor by absurd passions and motions work in it an alteration disturbing the imaginative faculty; but it only takes away opinions, and for the rest, makes use of other things according to their nature. But it is impossible, you will say, not to consent to things that are evident; for to deny such things as are believed is more absurd than neither to deny nor affirm. Who then are they that call in question things believed, and contend against things that are evident? They who overthrow and take away divination, who say that there is not any government of Divine Providence, who deny the sun and the moon — to whom all men offer sacrifices and whom they honor and adore — to be animated. And do not you take away that which is apparent to all the world, that the young are contained in the nature of their parents? Do you not, contrary to the sense of all men, affirm that there is no medium between pleasure and pain, saying that not to be in pain is to be in the fruition of pleasure, that not to do is to suffer, and that not to rejoice is to be grieved?