The religion which played such an important part in his family and school life was probably little more than a habit with him: a set of answers to certain fundamental problems which, accepted on the authority of parents and teachers, released his mind for the pursuit of his favourite studies. And yet, there is no doubt that we can find traces of this religious education in all his work: a personal experience of the catholic catechism and of catholic morality brings a spirit in contact with some of the great ideas and of the great realities of life in a much more intimate and profound way than the purely intellectual apprehensions of the same ideas and realities ever will. It creates habits of mind and moral tastes which will still be recognizable even after the individual mind to which they belong has undergone the most radical changes. In a philosopher, in particular, it forms a kind of personal background to thought, similar to that which modern philosophy actually has in its own history: it reproduces in the youth of one man that religious phase which corresponds to the youth of a civilization, and is the source of the intellectual development of a more conscious age. At intervals during his adolescence, Croce's faith intensified itself into passing aspirations towards a life of devotion, until it quietly vanished, so to speak, from his consciousness, through no great dramatic crisis, but merely in consequence of a course of lessons on the philosophy of religion, which were intended to strengthen it and make it more resistant to criticism, during the last years of his secondary education. At about the same time, having come under the influence of both Carducci and De Sanctis, he began to write, and contributed his first articles to a literary weekly, the _Fanfulla della Domenica_, which represented the most vigorous and advanced tendencies of the day.