15.] That which makes us suffer pain with so much impatience is the not being accustomed to repose our chiefest contentment in the soul; that we do not enough rely upon her who is the sole and sovereign mistress of our condition.

The body, saving in the greater or less proportion, has but one and the same bent and bias; whereas the soul is variable into all sorts of forms; and subject to herself and to her own empire, all things whatsoever, both the senses of the body and all other accidents: and therefore it is that we ought to study her, to inquire into her, and to rouse up all her powerful faculties.

There is neither reason, force, nor prescription that can anything prevail against her inclination and choice.

Of so many thousands of biases that she has at her disposal, let us give her one proper to our repose and conversation, and then we shall not only be sheltered and secured from all manner of injury and offence, but moreover gratified and obliged, if she will, with evils and offences.
She makes her profit indifferently of all things; error, dreams, serve her to good use, as loyal matter to lodge us in safety and contentment.
'Tis plain enough to be seen that 'tis the sharpness of our mind that gives the edge to our pains and pleasures: beasts that have no such thing, leave to their bodies their own free and natural sentiments, and consequently in every kind very near the same, as appears by the resembling application of their motions.

If we would not disturb in our members the jurisdiction that appertains to them in this, 'tis to be believed it would be the better for us, and that nature has given them a just and moderate temper both to pleasure and pain; neither can it fail of being just, being equal and common.