There is no regular path which leads from these intuitions into the land of ghostly schemata, the land of abstractions. There exists no word for these intuitions; when man sees them he grows dumb, or else he speaks only in forbidden metaphors and in unheard - of combinations of concepts.

Indeed, it is only by means of the rigid and regular web of concepts that the waking man clearly sees that he is awake; and it is precisely because of this that he sometimes thinks that he must be dreaming when this web of concepts is torn by art.

It is no use dealing with illusions and make-believes. We must look at the facts. The world ... is too dangerous for anyone to be able to afford to nurse illusions. We must look at realities.

Knowledge kills action; action requires the veils of illusion.

Love matches, so called, have illusion for their father and need for their mother.

Every philosophy is the philosophy of some stage of life.