A man's spirit is shaped by life. Giovanni Bosco did not escape the common law. Its existence developed in the Italy of the nineteenth century, under the pontificates of Pius VII, Leo XII, Pius VIII, Gregory XVI, and above all of Pius IX and Leo XIII. He lived, first in the small Sardinian kingdom, then, from 1861, in the kingdom of Italy, in the Risorgimento and in the unification of the peninsula at the expense of the papal monarchy. During his lifetime, the century has gone from a certain Gallicanism and from a certain Jansenism to the spirit of the Vatican Council I and triumphant liguorism. " Giovanni Bosco was later a priest in a township, an animator of a youth group, founder of religious societies. A man of action opposed to various tendencies, now he has submitted to it, now he has reacted, now he has fought. He talked a lot and wrote a lot. But we will always insist in saying that his conception of life and Christian perfection - the one we will strive to describe in its fundamental lines in these chapters - was not at all detached from his time. In particular, his first thirty years and the apostolic orientation of his work were decisive in the formation of his spirit.