Each tree within the forest is similar enough to one another to be called a tree, yet each tree in the forest is nevertheless distinct from another. For all the similarity in their trunks, an equal amount of dissimilarity can be found within their leafs. For all the similarity in their colour, an equal amount of dissimilarity can be found within their branches. Every tree inside the forest, beyond doubt, falls into the category of tree, but every tree is likewise distinct from another.
By the same token, each human within society is similar enough to one another to be called a human, yet each human within society is nevertheless distinct from another. For all the similarity in their skeletons, an equal amount of dissimilarity can be found within their personalities. For all the similarity in their skin, an equal amount of dissimilarity can be found within their systems of belief. Every human inside the society, beyond doubt, falls into the category of human, but every human is likewise distinct from another.
More thoroughly put, each human within our immediate social community has a clavicle; each human has a cranium; and each human has a sternum. Unanimity in nature. And likewise, each human has a personality. But therein resides detail of significant difference. Some of us are ever more inclined to socialize, while others amongst us indulge our vivid imaginations with finely written literature. Some of us have an evidently large propensity to talk hours on end with another, yet some of us have not even the slightest inkling to venture from our homes. Disunity in nature.
Much similarly said, each human amongst the greater general public has sweat glands; each human has connective tissue; and each human has hair follicles. Uniformity amongst a populace. And as expected, each human amongst the public has some semblance of a belief system. But therein manifests extreme opposites and idiosyncrasies. Some of us hold true to scientific beliefs, yet others amongst us hold dear spiritual beliefs. Some of us are firm believers in free-market economics, but then others amongst us are of a more skeptical attitude towards the free-market. Non-conformity amongst each others beliefs.
From thus we can conclude, even when the appearance presents with a high-degree of similarity; a presentation upon the senses that evokes a deep sense of contiguity about the external world, a self-evident diversity resides within the inner details of things. A finer detail that allows for a clear and readily perceptible distinction between members of an identical category. Put otherwise, humans are distinct.