This study provides an integrated analysis of ϑυμός. A psychosomatic concept, found in Greek epics and medicine, θυμός designates courage as a “vital force around the chest”. Later, its meaning has been specified in two fields: 1) ϑυμός, thymós, the irascible soul, parallel to the concupiscible soul and opposite to the rational one, according to Plato’s tripartition; 2) ϑύμος, thymus, a cardiac gland of the vascular system. Today, the idea that θυμός, courage, and ϑύμος, cardiac gland, could have a common (...) semantic root – θύειν “to sacrifice by blowing and burning” – seems almost impossible. Our aim is to reconstitute the concept of ϑυμός, demonstrating how it has been reduced to a polarisation rational/irrational, and marginalised. We will examine the notion of ϑυμός in Greek tradition and describe one of its widespread manifestations, tattooing, both as a painful solicitation of interiority and for how the tattooed pictures reflect the personality of their wearers. (shrink)