rate God from the world, nor could he admit the
existence of world which is not God. He was a monotheist, but his
monotheism was pantheism. He saw God in all the manifestations of
Nature. This did not satisfy him nor resolve his doubts, and he
therefore confessed that reason could not compass the exalted aims of
philosophy. But there was no cynicism in his doubt. It was the
soul-sickening consciousness that reason was incapable of solving the
mighty questions that he burned to know. There was no way to arrive at
the truth, "for," said he, "error is spread over all things." It was not
disdain of knowledge, it was the combat of contradictory opinions that
oppressed him. He could not solve the questions pertaining to God. What
uninstructed reason can? "Canst thou by searching find out God? canst
thou know the Almighty unto perfection?" What was impossible to Job was
not possible to Xenophanes. But he had attained a recognition of the
unity and perfections of God; and this conviction he would spread
abroad, and tear down the superstitions which hid the face of truth. I
have great admiration for this philosopher, so sad, so earnest, so
enthusiastic, wandering from city to city, indifferent to money,
comfort, friends, fame, that he might kindle the knowledge of God. This
was a lofty aim indeed for philosophy in that age. It was a higher
mission than that of Homer, great as his was, though not so successful.

Parmenides of Elea, born about the year 530 B.C., followed out the
system of Xenophanes, the central idea of which was the existence of
God. With Parmenides the main thought was the notion of _being_. Being
is uncreated and unchangeable; the fulness of all being is _thought_;
the _All_ is thought and intelligence. He maintained the uncertainty of
knowledge, meaning the knowledge derived through the senses. He did not
deny the certainty of reason. He was the first who drew a distinction
between knowledge obtained by the senses and that obtained through the
reason; and thus he anticipated the doctrine of innate ideas. From the
uncertainty of knowledge derived through the senses, he deduced the
twofold system of true and apparent knowledge.

Zeno of Elea, the friend and pupil of Parmenides, born 500 B.C.,
brought nothing new to the system, but invented _Dialectics_, the art of
disputation,--that department of logic which afterward became so
powerful in the hands of Plato and Aristotle, and so generally admired
among the sch