In the field of philosophy Kant was the first to take the next decisive step towards the point of view that not only the qualities revealed by the se… - Hermann Weyl

We cannot hope to give here a final clarification of the essence of fact, judgement, object, property; this task leads into metaphysical abysses; about these one has to seek advice from men whose name cannot be stated without earning a compassionate smile—e.g. Fichte.

Important though the general concepts and propositions may be with which the modern industrious passion for axiomatizing and generalizing has presented us, in algebra perhaps more than anywhere else, nevertheless I am convinced that the special problems in all their complexity constitute the stock and core of mathematics; and to master their difficulties requires on the whole the harder labor.

In these days the angel of topology and the devil of abstract algebra fight for the soul of each individual mathematical domain.