“If you are mindful, Asclepius, these things should seem true to you, but they will be beyond belief if you have no knowledge. To understand is to believe, and not to believe is not to understand. Reasoned discourse does get to the truth, but mind is powerful, and, when it has been guided by reason up to a point, it has the means to get the truth. After mind had considered all this carefully and had discovered that all of it is in harmony with the discoveries of reason, it came to believe, and in this beautiful belief it found rest. By an act of god, then, those who have understood find what I have been saying believable, but those who have not understood do not find it believable. Let this much be told about understanding and sensation.”