What is the definition of Arcesilaus?

Ah, Arcesilaus! Now, you'd think he was a Greek philosopher who spent his days pondering the absurdity of life, perhaps even questioning whether it's all just a grand cosmic joke. But let's add a dash of humor to this intellectual cocktail, shall we? Imagine this: "Arcesilaus the Stoic, as he debated whether to wear his raincoat over his philosophical armor in the face of an impending existential crisis caused by a flat tire and a misplaced Socratic smirk."

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But here's the twist: "Arcesilaus decided it was a beautiful day to philosophize on existential dread while simultaneously pondering if the universe decides to shower him with rain just because he's wearing a raincoat and has a philosophical penchant for questioning the mundane."