41. Hindrance to the perceptions of sense is an evil to the animal nature. Hindrance to the movements [desires] is equally an evil to the animal nature. And something else also is equally an impediment and evil to the constitution of plants. So then that which is a hindrance to the intelligence is an evil to the intelligent nature. Apply all these things then to thyself. Does pain or sensuous pleasure affect thee？ The senses will look to that. Has any obstacle opposed thee in thy efforts towards an object？ if indeed thou wast making this effort absolutely [unconditionally， or without any reservation]， certainly this obstacle is an evil to thee considered as a rational animal. But if thou takest [into consideration] the usual course of things， thou hast not yet been injured nor even impeded. The things however which are proper to the understanding no other man is used to impede， for neither fire， nor iron， nor tyrant， nor abuse， touches it in any way. When it has been made a sphere， it continues a sphere. （xi. 12）.
42. It is not fit that I should give myself pain， for I have never intentionally given pain even to another.
43. Different things delight different people. But it is my delight to keep the ruling faculty sound without turning away either from any man or from any of the things which happen to men， but looking at and receiving all with welcome eyes and using everything according to its value.
44. See that thou secure this present time to thyself； for those who rather pursue posthumous fame do not consider that the men of after-time will be exactly such as these whom they cannot bear now； and both are mortal. And what is it in any way to thee if these men of after-time utter this or that sound， or have this or that opinion about thee？