Theodosius Dobzhansky

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Theodosius Grigorevich Dobzhansky (January 25, 1900December 18, 1975) was a noted geneticist, evolutionary biologist, and a leader of the Modern Evolutionary Synthesis. He was born in Russia (Ukraine) and attended Kiev University.


  • The evolution of life, and the evolutionary origin of mankind, are scientifically established as firmly and completely as any historical event not witnessed by human observers. Any concession to anti-evolutionists, suggesting that there are scientific reasons to doubt the facticity of evolution, would be propagating a plain untruth.
    • In a letter to J. Kunamoto, 1972.
  • The living world is not a single array . . . connected by unbroken series of intergrades.
    • Genetics and the Origin of Species, by Theodosius Dobzhansky, 1951, p. 4.

"Nothing in Biology Makes Sense Except in the Light of Evolution" (1973)[edit]

The American Biology Teacher, Vol. 35, pp 125-129, March 1973. Presented at the 1972 NABT convention.

  • 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.
  • Does the evolutionary doctrine clash with religious faith? It does not. It is a blunder to mistake the Holy Scriptures for elementary textbooks of astronomy, geology, biology, and anthropology. Only if symbols are construed to mean what they are not intended to mean can there arise imaginary, insoluble conflicts. As pointed out above, the blunder leads to blasphemy: the Creator is accused of systematic deceitfulness.

Mourning and Funerals—For Whom (1977)[edit]

Mourning and Funerals—For Whom?, The Watchtower magazine, June 1, 1977.
  • 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.


  • The greatest evolutionist of our century.

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