Only one lease of life is granted us; and the inquiry with every one should be, “How can I invest my powers so that they may yield the greatest profit? How can I do most for the glory of God and the benefit of my fellow-men?” For life is valuable only as it is used for the attainment of these ends. Our first duty toward God and our fellow-beings is that of self-development. Every faculty with which the Creator has endowed us should be cultivated to