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the idea that human beings as rational beings are ends in themselves,
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not open to use merely as a means.
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When I make a false promise to you,
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I'm using you as a means to my ends,
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to my desire for the $100,
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and so I'm failing to respect you, I'm failing to respect your dignity,
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I'm manipulating you.
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Now, consider the example of the duty against suicide.
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Murder and suicide are at odds with the categorical imperative.
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Why?
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If I murder someone, I'm taking their life for some purpose,
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either because I'm a hired killer