If I were talking to an athlete, I should say, “Show me your shoulders”; and then he might say, “Here are my halteres.” You and your halteres look to that. I should reply, “I wish to see the effect of the halteres.” So, when you say: “Take the treatise on the active powers, and see how I have studied it.” I reply, “Slave, I am not inquiring about this, but how you exercise pursuit and avoidance, desire and aversion, how your design and purpose and prepare yourself, whether conformably to nature or not. If conformably, give me evidence of it, and I will say that you are making progress: but if
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