Then there is always a struggle going on between principle and nature. Sometimes the principle subdues nature and nature surrenders, and sometimes nature subdues the principle and the principle surrenders; and there comes a great conflict. A person may seem to be very modest, and he remains modest as long as one does not know him, but when one gets to know him he may appear to be quite the contrary. Nature will clash with the character under certain conditions. A man who is lazy by nature may be in a situation where he must work, the moment he sees that nobody is looking he will sit down in a chair and doze. He will only work as long as he is watched, for by nature he is lazy, and only the conditions have made him work.