By psychology is meant that before uttering a word a man should think what effect it might have on the atmosphere, upon the person, on the whole of life. Every word is a materialization of thought; it has a dynamic power. If one considered one would find that every little thought, every little feeling, every movement one makes, even a smile, or a frown, such a small thing has its effect. If one knew the effect of every cause before bringing that cause into thought, speech, or action one would become wise. Generally man does everything mechanically, influenced by the conditions of the moment, by anger or depression; so every man in life lives a life without control, in other words, without mastery. What we learn through spiritual knowledge is to gain mastery, to learn what consequences our actions will bring. A man cannot be perfect in this knowledge; all souls have their limitations; but it is something to strive after, and in this is the fulfillment of God's purpose. Even this knowledge alone does not make man capable; practice is necessary, and practice may take a whole life. Every day man seems to make more mistakes; this is not really so, but his sight becomes more keen.