I will tell you, he said. The lovers of knowledge are conscious that the soul was simply fastened and glued to the body—until philosophy received her, she could only view real existence through the bars of a prison, not in and through herself; she was wallowing in the mire of every sort of ignorance; and by reason of lust had become the principal accomplice in her own captivity. This was her original state; and then, as I was saying, and as the lovers of knowledge are well aware, philosophy, seeing how terrible was her confinement, of which she was to herself the cause, received and gently comforted her and sought to release her, pointing out that the eye and the ear and the other senses are full of deception, and persuading her to retire from them, and abstain from all but the necessary use of them, and be gathered up and collected into herself, bidding her trust in herself and her own pure apprehension of pure existence, and to mistrust whatever comes to her through other channels and is subject to variation; for such things are visible and tangible, but what she sees in her own nature is intelligible and invisible. And the soul of the true philosopher thinks that she ought not to resist this deliverance, and therefore abstains from pleasures and desires and pains and fears, as far as she is able; reflecting that when a man has great joys or sorrows or fears or desires, he suffers from them, not merely the sort of evil which might be anticipated—as for example, the loss of his health or property which he has sacrificed to his lusts—but an evil greater far, which is the greatest and worst of all evils, and one of which he never thinks.
What is it, Socrates? said Cebes.
The evil is that when the feeling of pleasure or pain is most intense, every soul of man imagines the objects of this intense feeling to be then plainest and truest: but this is not so, they are really the things of sight.
Very true.
And is not this the state in which the soul is most enthralled by the body?
How so?
Why, because each pleasure and pain is a sort of nail which nails and rivets the soul to the body, until she becomes like the body, and believes that to be true which the body affirms to be true; and from agreeing with the body and having the same delights she is obliged to have the same habits and haunts, and is not likely ever to be pure at her departure to the world below, but is always infected by the body; and so she sinks into another body and there germinates and grows, and has therefore no part in the communion of the divine and pure and simple.
Most true, Socrates, answered Cebes.
And this, Cebes, is the reason why the true lovers of knowledge are temperate and brave; and not for the reason which the world gives.
Certainly not.