So that it doth not seem to be by accident, but with reason proposed by you, that I should discuss grief, and the other perturbations separately; for there lies the spring and head of all our miseries; but the cure of grief, and of other disorders, is one and the same in that they are all voluntary, and founded on opinion; we take them on ourselves because it seems right so to do.

Philosophy undertakes to eradicate this error, as the root of all our evils: let us therefore surrender ourselves to be instructed by it, and suffer ourselves to be cured; for while these evils have possession of us, we not only cannot be happy, but cannot be right in our minds.

We must either deny that reason can effect anything, while, on the other hand, nothing can be done right without reason, or else, since philosophy depends on the deductions of reason, we must seek from her, if we would be good or happy, every help and assistance for living well and happily..