Tolerance is the sign of an evolved soul, for a soul shows the proof of its evolution in the degree of the tolerance it shows. The life in the lower creation shows the lack of tolerance. The tendency of fighting with one another which one sees among beasts and birds shows the reason at the back of it, that intolerance is born in their nature. By a psychological study of the nature and the tendencies of the lower creation one will find that the evolution that takes place among birds and beasts shows this tendency of intolerance becoming less and less. It is the love element developing in their nature which brings them together to form flocks and herds. The same tendency of intolerance sometimes manifests in a more distinct and pronounced form in man. The reason is that man's responsibility in life is greater, his difficulties are many, and he lives in a crowd which is larger than a flock or a herd.