Power is pleasant only if you are not afraid to lose it

What power is there in money or fame or influence at court to help us to gain ease of soul or an untroubled life, if it is not true that the use of them is pleasant to us when we have them and that we never miss them when we have them not? And how else can this be achieved except through reason, which has been carefully trained quickly to hold back the passionate and irrational part of the soul when it breaks bounds, as it often does, and not to allow it to flow away and be swept downstream because it does not have what it wants?

Plutarch, Moralia, On Tranquility of Mind