Seneca to Lucilius: 58, on being

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The 58th letter that Seneca wrote to his friend Lucilius, unofficially entitled “On being,” is one of the most fascinating in terms of insights into Seneca’s own mind and into Stoic philosophy more broadly. Seneca tells Lucilius that:

“We at times should slacken our minds and refresh them with some sort of entertainment. But let even your…