The fifth aspect of thought is materialization. And it is in the study of this subject that we find the greatest secret of life. No doubt a person will readily accept that it is by the architect's imagination that a beautiful building is built, that it is by the gardener's imagination that a beautiful garden is made. But generally when it comes to matter and all things that are connected with matter, man wonders how far imagination or thought has power over them. Nowadays, as psychology is beginning to spread throughout the Western world, people will at least listen patiently when one speaks about it. But on the other hand there are many who take a medicine with great faith, but if they are told that a thought can cure them they will smile at the idea. This shows that with all the progress that humanity seems to have made, it has gone back in one direction, the higher thought; for man today generally does not believe in the power of thought and he believes still less in what he calls emotion.