diagram

flowchart LR A["The Enchiridion"] --> B["Key Themes"] B --> C1["Control and Independence"] B --> C2["Desires and Aversions"] B --> C3["Reason and Nature"] B --> C4["External vs. Internal"] C1 --> D1["What is in our power?"] C1 --> D2["What is not in our power?"] C1 --> D3["Freedom from external control"] C2 --> E1["Desire leads to disappointment"] C2 --> E2["Aversion leads to suffering"] C2 --> E3["Moderation in desires and aversions"] C3 --> F1["Use of reason"] C3 --> F2["Conformity with nature"] C3 --> F3["Rational use of impressions"] C4 --> G1["Focus on internal goods"] C4 --> G2["Indifference to external goods"] C4 --> G3["Self-sufficiency and inner peace"] D1 --> H1["Opinions, Pursuits, Desires"] D2 --> H2["Body, Property, Reputation"] D3 --> H3["Achieving inner freedom"] E1 --> I1["Seeking the unattainable"] E2 --> I2["Avoiding inevitable aspects of life"] E3 --> I3["Focus on what truly matters"] F1 --> J1["Philosophical reasoning"] F2 --> J2["Living according to nature's laws"] F3 --> J3["Proper reactions to life’s events"] G1 --> K1["Valuing virtue over material goods"] G2 --> K2["Equanimity in face of life's ups and downs"] G3 --> K3["Independence from external validation"]