The Monk, as they called him, settled himself on the camp-chair beside his bunk and stared through the window at the harsh sand and black-blue sky of Mars. He did not mean to begin his “work” for ten minutes yet. Not, of course, the work he had been brought there to do. He was the meteorologist of the party, and his work in that capacity was largely done; he had found out whatever could be found out. There was nothing more, within the limited radius he could investigate, to be observed for at least twenty-five days. And meteorology had not been his real motive. He had chosen three years on Mars as the nearest modern equivalent to a hermitage in the desert. He had come there to meditate: to continue the slow, perpetual rebuilding of that inner structure which, in his view, it was the main purpose of life to rebuild.
From The Dark Tower