Duality - that is, two-ness - is a general feature of Creation. It is the law of sex all through the animal and vegetable worlds. It is beautifully expressed in the response of Parallelism in poetry, especially the Eastern poetry so fully illustrated in the Holy Scriptures:-
"Day unto day uttereth speech;
And night unto night teacheth knowledge." - Psa. xix. 2.
"Let another praise thee, and not thine own mouth;
A stranger, and not thine own lips." - Prov. xxvii. 2.
"The wicked flee when no man pursueth;
But the righteous are bold as a lion." - Prov. xxi. 1.
"The rich man is wise in his own conceit;
But the poor that hath understanding searcheth him out." - Prov. xxviii. 11.
"Faithful are the wounds of a friend;
But the kisses of an enemy are deceitful." - Prov. xxvii. 6.
It is fundamentally seen in the very Polarity of Thought. We cannot conceive the idea of the me apart from the idea of the not me; nor the idea of the finite
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