The living world is not a single array . . . connected by unbroken series of intergrades. - Theodosius Dobzhansky

Seen in the light of evolution, biology is, perhaps, intellectually the most satisfying and inspiring science. Without that light it becomes a pile of sundry facts -- some of them interesting or curious but making no meaningful picture as a whole.

No known human group . . . simply throw[s] out its dead without any ritual or ceremony. In stark contrast, no animal practices burial of dead individuals of its own species.

Man is the only living being who has a developed self-awareness and death-awareness.