In India from the soma frenzy in the Vedas, through the mystic reveries of the Upanishads, and the hypnotic trances of the ancient Yoga, allied beliefs and practices had never lost their importance and their charm.
Accident betrayed the secret of his retirement; he was compelled to leave his mathematical investigations, and to take part in entertainments, where the only thing that chimed in with his theorizing reveries was the music. French politics were at that time characterized by violence and intrigue to such an extent that Paris was no fit place for a student, and there was little honourable prospect for a soldier.
These doctrines of Lotze - though pronounced with the distinct and reiterated reserve that they did not contain a solution of the philosophical question regarding the nature, origin, or deeper meaning of this all-pervading mechanism, neither an explanation how the action of external things on each other takes place nor yet of the relation of mind and body, that they were merely a preliminary formula of practical scientific value, itself requiring a deeper interpretation - these doctrines were nevertheless by many considered to be the last word of the philosopher who, denouncing the reveries of Schelling or the idealistic theories of Hegel, established the science of life and mind on the same basis as that of material things.
From these reveries he was at length awakened by news which indicated that the consequences of Macdonald's defeat had been far more serious to the moral of that command than he had imagined.
He finished his Confessions, wrote his Dialogues (the interest of which is not quite equal to the promise of their curious sub-title, Rousseau juge de Jean Jacques), and began his Reveries du promeneur solitaire, intended as a sequel and complement to the Confessions, and one of the best of all his books.