It was two days' journey from my home to the forester's, for his district was not in our country. The man often gave me proofs of his thorough and many-sided knowledge; but he did not understand the art of conveying his knowledge to others, especially because what he knew he had acquired only by dint of actual experience.[18] Further, some work of timber-floating[19] with which he had been entrusted hindered him from devoting to me the stipulated time necessary for my instruction. As soon as I saw this quite clearly, my own activity of mind urged me to make use of the really excellent books on forestry and geometry which I found lying to my hand. I also made acquaintance with the doctor of a little town near by, who studied natural science for his amusement; and this friend lent me books on botany, through which I learnt also about other plants than just those of the forest. A great deal of my time during the absence of the forester (when I was left quite to myself) I devoted to making a sort of map of the neighbourhood I lived in; but botany was my special occupation. My life as forester's apprentice was a four-fold one: firstly, there was the homelier and more practical side of life; then the life spent with Nature, especially forest-nature; then also a life of the study, devoted to work at mathematics and languages; and lastly, the time spent in gaining a knowledge of plants. My chosen profession and the other circumstances of my position might have brought me into contact with many kinds of men; but nevertheless my life remained retired and solitary. My religious church life now changed to a religious communion with Nature, and in the last half-year I lived entirely amongst and with my plants, which drew me towards them with fascination, notwithstanding that as yet I had no sense of the inner life of the plant world. Collecting and drying specimens of plants was a work I prosecuted with the greatest care. Altogether this time of my life was devoted in many various ways to self-education, self-instruction, and moral advancement. Especially did I love to indulge my old habit of self-observation and introspection.