and the moral responsibilities of an orator. The opening portion of the book introduces François Delsarte's background and the development of his oratorial system. It describes his early education in music, his subsequent loss of voice, and how these experiences led him to study and formulate the scientific basis for oratory. Delaumosne emphasizes that oratory is an art that combines the expression of feelings through voice and gesture with the articulation of cognitive thoughts in speech. He also touches upon the significance of understanding one’s own voice and the mechanics it involves, setting the stage for deeper exploration of vocal techniques and the intricacies of gestural communication in the subsequent chapters. (This is an automatically generated summary.)