The ancient and medieval Greek writer's perceptions concerning the relationship between sexual characteristics and testicular volume.

nuchs, children and women have high-pitched voices”. He also made the observation that “Eunuchs never become bald and never present gout”. Aristotle (4-3 c. BC), in a treatise on the nature of the human voice, supports this notion and attributes the voice change to the weakness of the heart due to the ablation of the testicles. His main line of reasoning focuses on the effect testicles were thought to exert on the heart because of their weight through supposedly stretching the intermediate tissues and transferring the tension to the heart in much the same manner as weights of a loom stretch the fibers of the textile. The ablation of the testicles, he theorized, results in permanent relaxation of the heart. He further concluded, “When the testicles are ablated the male becomes a female”. Galen, commenting on Aristotle’s writings, partly refutes Aristotle’s position, affirming that, though the testicle’s impact on the body is considerable, it does not concern weight.