Among all creatures a change of breath can be found through their spells of passion, anger and fear. The breath of man likewise shows his nature. A man who works and is always busy with material things has a noisy breath, similar to that of the animals, and the irregularity of his breath shows the unsettled condition of his life; the breath of a thoughtful person is much more rhythmic and fine. Of course more physical energy makes breath grosser, and a person becomes thoughtless. When his breath is normal, man becomes thoughtful. When the energy is less, a person becomes still wiser, but incapable of making a right use of his wisdom, owing to the weakness of the means: his physical body.