Behold but One in all things; it is the second that leads you astray.
That this insight into the nature of things and the origin of good and evil is not confined exclusively to the saint, but is recognized obscurely by every human being, is proved by the very structure of our language. For language, as Richard Trench pointed out long ago, is often ‘wiser, not merely than the vulgar, but even than the wisest of those who speak it. Sometimes it locks up truths which were once well known, but have been forgotten. In other cases it holds the germs of truths which, though they were never plainly discerned, the genius of its framers caught a glimpse of in a happy moment of divination.’ For example, how significant it is that in the Indo-European languages, as Darmsteter has pointed out, the root meaning ‘two’ should connote badness. The Greek prefix dys-(as in dyspepsia) and the Latin dis- (as in dishonourable) are both derived from ‘duo.’ The cognate bis- gives a pejorative sense to such modern French words as bévue (‘blunder/ literally ‘two-sight’). Traces of that ‘second which leads you astray’ can be found in ‘dubious,’ ‘doubt’ and Zweifel – for to doubt is to be double-minded. Bunyan has his Mr. Facing-both-ways, and modern American slang its ‘two-timers.’ Obscurely and unconsciously wise, our language confirms the findings of the mystics and proclaims the essential badness of division- a word, incidentally, in which our old enemy ‘two’ makes another decisive appearance.
Here it may be remarked that the cult of unity on the political level is only an idolatrous ersatz for the genuine religion of unity on the personal and spiritual levels. Totalitarian regimes justify their existence by means of a philosophy of political monism, according to which the state is God on earth, unification under the heel of the divine state is salvation, and all means to such unification, however intrinsically wicked, are right and may be used without scruple. This political monism leads in practice to excessive privilege and power for the few and oppression for the many, to discontent at home and war abroad. But excessive privilege and power are standing temptations to pride, greed, vanity and cruelty; oppression results in fear and envy; war breeds hatred, misery and despair. All such negative emotions are fatal to the spiritual life. Only the pure in heart and poor in spirit can come to the unitive knowledge of God. Hence, the attempt to impose more unity upon societies than their individual members are ready for makes it psychologically almost impossible for those individuals to realize their unity with the divine Ground and with one another.
So far, then, as a fully adequate expression of the Perennial Philosophy is concerned, there exists a problem in semantics that is finally insoluble. The fact is one which must be steadily borne in mind by all who read its formulations. Only in this way shall we be able to understand even remotely what is being talked about. Consider, for example, those negative definitions of the transcendent and immanent Ground of being. In statements such as Eckhart’s, God is equated with nothing. And in a certain sense the equation is exact; for God is certainly no thing. In the phrase used by Scotus Erigena God is not a what; He is a That. In other words, the Ground can be denoted as being there, but not defined as having qualities. This means that discursive knowledge about the Ground is not merely, like all inferential knowledge, a thing at one remove, or even at several removes, from the reality of immediate acquaintance; it is and, because of the very nature of our language and our standard patterns of thought, it must be, paradoxical knowledge. Direct knowledge of the Ground cannot be had except by union, and union can be achieved only by the annihilation of the self-regarding ego, which is the barrier separating the ‘thou’ from the ‘That’.
Aldous Huxley, The Perennial Philosophy.