Seneca quote

From Moral letters to Lucilius/Letter 17:

One cannot greet Parthian royalty without bringing a gift; and in your case I cannot say farewell without paying a price. But what of it? I shall borrow from Epicurus: "The acquisition of riches has been for many men, not an end, but a change, of troubles." I do not wonder. For the fault is not in the wealth, but in the mind itself. That which had made poverty a burden to us, has made riches also a burden. Just as it matters little whether you lay a sick man on a wooden or on a golden bed, for whithersoever he be moved he will carry his malady with him; so one need not care whether the diseased mind is bestowed upon riches or upon poverty. His malady goes with the man.