"From my childhood I have never sympathized with the dualism of sentiments and devotion. One may have a very complex character, one may admire the whole world and understand all the beauties contained in it; one may be happy to sympathize with every perfection of nature and art; and yet one must have along with all these riches an aim, a God, a virtue, or a principle, that will stand above all the rest. And while enjoying the luxury of life, one must be ready at every moment to perform one's duty towards the aim that stands over all. That is my ideal of a human being; and I must add that the more superior the aim chosen to stand highest is to other aims or ends of life, the more valuable is the person who has chosen it. (February 1913 letter, p255)"