A Critical History of Greek Philosophy

of Plato, physics and astronomy were included as parts of philosophy, whereas now they constitute separate sciences. This, however, is not an insurmountable difficulty. What chiefly militates against the effort to frame a definition is that the precise content of philosophy is differently viewed by different schools of thought. Thus a definition of {2} philosophy which a follower of Herbert Spencer might frame would be unacceptable to an Hegelian, and the Hegelian definition would be rejected by the Spencerian. If we were to include in our definition some such phrase as "the knowledge of the Absolute," while this might suit some philosophers, others would deny that there is any Absolute at all. Another school would say that there may be an Absolute, but that it is unknowable, so that philosophy cannot be the knowledge of it. Yet another school would tell us that, whether there is or is not an Absolute, whether it is or is not knowable, the knowledge of it is in any case useless, and ought not to be sought. H