but one knows in advance that they give no reply to life's

questions. Those sciences simply ignore life's questions. They

say: "To the question of what you are and why you live we have no

reply, and are not occupied with that; but if you want to know the

laws of light, of chemical combinations, the laws of development of

organisms, if you want to know the laws of bodies and their form,

and the relation of numbers and quantities, if you want to know the

laws of your mind, to all that we have clear, exact and