This makes us wonder whether it is possible for a scientist to arrive through his scientific studies, or an artist through his art and a man of commerce through his trade, at that central truth which concerns every soul. When we look at humanity we find that we can not only divide it into different races and different nations; we can also divide it into people of different occupations. In this age of materialism, the only thing that unites us is our material interest; but how long can we be united by a material interest? A friendship formed in materialism is not a friendship which will endure, nor can such friends depend upon each other. It is sacrifice which enables us to be friends and to co-operate with one another, and in sacrifice the sign of spirituality is seen; but we do not unite together in sacrifice today; our unity is in what we can gain in one way or the other. It is a matter for distress that in order to unite we are holding fast to a lower ideal which will never prove a center of unity. It is only the high ideal which can unite and in which we can hope to be united.