Letters 17.12

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. Farewell.

Seneca, Letters to Lucilius 17.12, translated by Richard Mott Gummere