The best plan is to reject straightaway the first incentives to anger, to resist its very beginnings, and to take care not to be betrayed into it: for if once it begins to carry us away, it is hard to get back again into a healthy condition, because reason goes for nothing when once passion has been admitted to the mind, and has by our own free will been given a certain authority, it will for the future do as much as it chooses, not only as much as you will allow it. The enemy, I repeat, must be met and driven back at the outermost frontier-line: for when he has once entered the city and passed its gates, he will not allow his prisoners to set bounds to his victory. The mind does not stand apart and view its passions from without, so as not to permit them to advance further than they ought, but it is itself changed into a passion, and is therefore unable to check what once was useful and wholesome strength, now that it has become degenerate and misapplied: for passion and reason, as I said before, have not distinct and separate provinces, but consist of the changes of the mind itself for better or for worse. How then can reason recover itself when it is conquered and held down by vices, when it has given way to anger?