The country around Clermont is marvelous, and although I am the reverse of poetical, a man for whom the external world means very little, I have always retained in my memory the pictures of the landscapes which surrounded these walks. While the city on one side looks toward the plain of the Limagne, on the other it stands on the foothills of the Dôme Mountains. The slope of the extinct craters, the undulations caused by old eruptions and the streams of hardened lava give to the outlines of these volcanic mountains a resemblance to the landscapes in the moon as discovered by the telescope in that dead planet.

On one side is the savage and sublime memorial of the most terrible convulsions of the globe, and on the other the prettiest rusticity of stony roads among the vineyards, of murmuring brooks under the willows and chestnuts. The great pleasures of my childhood were the interminable wanderings with my father in all the paths which lead from the Puy de Crouël to Gergovie, from Royat to Durtol, from Beaumont to Gravenoire.

Simply in writing these names, my memory rejuvenates my heart. I see myself again the little boy, whom a portrait represents with long hair, with his legs in cloth leggings, who walks along holding his father’s hand. Whence came this love for the fields to him, the learned mathematician, the man of study and of reflection? I have often thought of it since, and I believe I have discovered a law of the development of mind;—our youthful tastes persist even when we are developed in a sense contrary to them, and we continue to exercise these tastes while justifying them by intellectual reasons which would exclude such things.

I will explain. My father naturally loved the country because he was brought up in a village, and when he was small had passed whole days on the banks of the brooks among the insects and the flowers. Instead of yielding to these tastes in a simple manner, he mingled them with his present occupations. He would not have pardoned himself for going to the mountains without studying there the formation of the land; for looking at a flower without determining its character and discovering its name; for taking up an insect without recalling its family and its habits.

Thanks to the rigor of his method in all work he arrived at a very complete knowledge of the country; and, when we walked together, this knowledge was the sole subject of our conversation. The landscape of the mountains became a pretext for explaining to me the revolutions of the earth; he passed from that with a clearness of speech which made such ideas intelligible to me, to the hypothesis of Laplace upon nebula, and I saw distinctly in my imagination the planetary protuberances flying off from the burning nucleus, from this torrid sun in rotation.

The heavens at night in the beautiful summer months became a kind of map which he deciphered for me, and on which I distinguished the Pole Star, the seven stars of the Chariot, Vega of the Lyre, Sirius, all those inaccessible and formidable worlds of which science knows the volume, the position and almost the very metals of which they are composed.

It was the same with the flowers which he taught me to arrange in an herbarium, with the stones which I broke with a little iron hammer, with the insects which I fed or pinned up, as the case might be. Long before object lessons were practiced in the college my father applied to my education first this great maxim: “Give a scientific account of anything we may encounter.”

Thus reconciling the pleasantry of his first impressions with the precision acquired in his mathematical studies. I attribute to this teaching the precocious spirit of analysis which was developed in me during my early youth, and which, without doubt, would have turned toward the positive studies if my father had lived. But he could not complete this education, undertaken after a prepared plan of which I have since found trace among his papers.

In the course of one of our walks, and on one of the warmest days of summer, in my tenth year, we were overtaken by a storm which wet us to the bones. During the time that it required to reach home in our soaked clothes my father took cold. In the evening he complained of a chill. Two days after an inflammation of the lungs declared itself, and the week following he died.

As I wish, in this summary indication of diverse causes which formed my mind, to avoid at any cost that which I hate most of anything in the world, the display of subjective sentimentality, I will not recount to you, my dear master, any further details of this death. They were heartrending, but I felt their sadness only in a far-off way, and that later.