Diogenes used to say, "From the time that Antisthenes set me free, I have ceased being a slave." How did Antisthenes set him free? Listen to what Diogenes says: "He taught me what is mine and what is not mine. Property is not mine; kinsmen, members of my household, friends, reputation, familiar places, social intercourse with people-all these things are not my own. 'What, then, is yours? The power to deal with external circumstances and impressions'. He showed me that I possess that without any hindrance or constraint. No one can hamper me, and no one can force me to deal with them otherwise
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