The life which we know is from our own life, therefore the nature and character of that life which is eternal is beyond man's comprehension. By this it is not meant that man is incapable of knowing the deeper life, but only that what man knows of life is from the knowledge of his own life. The difference between the life known to the generality and the life which is unknown is that of illusion and reality. Man mocks at the idea if he be told that all this is illusion, until he dives deep and finds out by comparison that this life which is subject to birth and death and subject to changes is a life and yet no life. This life is like a bubble in the sea. The bubble is existent and yet in reality non-existent when compared with the sea. And yet we cannot say that the bubble is non-existent, for it merges in the same sea in which it once appeared; so nothing takes it away but its own source and its original being.