David Zindell said this quote

The number two, he thought, was an ominous number. Two is a reflection or duplication of one, the most perfect of the natural numbers. Two is all echo and counterpoise; two is the beginning of multiplicity, the way the universal oneness differentiates itself and breaks apart into strings and quarks and photons, all the separate and component pieces of life. Two is a symbol of becoming as opposed to pure being...