It is easier to spot the differences than the akin, it is because we have been taught that we are unique in our own way, everybody of us are one in a billion, human's urge to stand out, and we all have desire to be loved and noticed. We become an arrogant human being and have less tolerance on diversity, on the other hand we feel insecure oftenly because of our own standard and the habit to compare ourselves to other people.
The tao that can be told is not the eternal Tao The name that can be named is not the eternal Name. The unnamable is the eternally real. Naming is the origin of all particular things. Free from desire, you realize the mystery. Caught in desire, you see only the manifestations. Yet mystery and manifestations arise from the same source. This source is called darkness. Darkness within darkness. The gateway to all understanding. Tao The Ching Chapter 1