After two English schooners, whose red flag fluttered towards the sky, there came a magnificent Brazilian three-master; it was perfectly white and wonderfully clean and shining. I saluted it, I hardly know why, except that the sight of the vessel gave me great pleasure. _May 12._ I have had a slight feverish attack for the last few days, and I feel ill, or rather I feel low-spirited. Whence do these mysterious influences come, which change our happiness into discouragement, and our self-confidence into diffidence? One might almost say that the air, the invisible air, is full of unknowable Forces, whose mysterious presence we have to endure. I wake up in the best spirits, with an inclination to sing in my throat. Why? I go down by the side of the water, and suddenly, after walking a short distance, I return home wretched, as if some misfortune were awaiting me there. Why? Is it a cold shiver which, passing over my skin, has upset my nerves and given me low spirits? Is it the form of the clouds, or the color of the sky, or the color of the surrounding objects which is so changeable, which have troubled my thoughts as they passed before my eyes? Who can tell? Everything that surrounds us, everything that we see without looking at it, everything that we touch without knowing it, everything that we handle without feeling it, all that we meet without clearly distinguishing it, has a rapid, surprising and inexplicable effect upon us and upon our organs, and through them on our ideas and on our heart itself. How profound that mystery of the Invisible is! We cannot fathom it with our miserable senses, with our eyes which are unable to perceive what is either too small or too great, too near to, or too far from us; neither the inhabitants of a star nor of a drop of water ... with our ears that deceive us, for they transmit to us the vibrations of the air in sonorous notes. They are fairies who work the miracle of changing that movement into noise, and by that metamorphosis give birth to music, which makes the mute agitation of nature musical ... with our sense of smell which is smaller than that of a dog ... with our sense of taste which can scarcely distinguish the age of a wine! Oh! If we only had other organs which would work other miracles in our favor, what a number of fresh things we might discover around us! _May 16._ I am ill, decidedly! I was so well last month! I am feverish, horribly feverish, or rather I am in a state of feverish enervation, which makes my mind suffer as much as my body. I have without ceasing that horrible sensation of some danger threatening me, that apprehension of some coming misfortune or of approaching death, that presentiment which is, no doubt, an attack of some illness which is still unknown, which germinates in the flesh and in the blood.