如果您碰巧将注意力转向外部，为了任何人的乐趣，请确保您已经破坏了生活计划。那么，在一切中都满足于哲学家；而且，如果您对任何一个人来说似乎都如此，那就看起来就足够了。
(If you ever happen to turn your attention to externals, for the pleasure of any one, be assured that you have ruined your scheme of life. Be contented, then, in everything, with being a philosopher; and if you with to seem so likewise to any one, appear so to yourself, and it will suffice you.)