Just as the good actor perform well whatever role the poet assigns, so too must the good man perform whatever Fortune assigns. For she, says Bion, just like a poet, sometimes assigns the leading role, sometimes that of the supporting role; sometimes that of a king, sometimes that of a beggar. Do not, therefore, being a supporting actor, desire the role of the lead.

Bion of Borysthenes
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The Power Of Failure: We Get To Decide What It Means