Temperament
| Temperament type after Hippocrates | Characteristics of temperament | Outstanding people |
| Phlegmatic | Passive, very hardworking, slowly adapting, emotions are weak | I.A. Krylov, M.I. Kutuzov, I. Newton |
| Sanguine | Active, energetic, easily adapts | M.Yu. Lermontov, Napoleon 1, W.A. Mozart |
| Choleric | Active, very energetic, persistent, uncontrollable emotions | Peter 1, A. Pushkin, A.V. Suvorov, M. de Robespierre |
| Melancholic | Passive, easily tired, hard to adjust, very impressionable | N.V. Gogol, P.I. Tchaikovsky |
