The more we know, the better we realize that our knowledge is a little island in the midst of an ocean of ignorance.
Theodosius DobzhanskyEvolutionary plasticity can be purchased only at the ruthlessly dear price of continuously sacrificing some individuals to death from unfavourable mutations. Bemoaning this imperfection of nature has, however, no place in a scientific treatment of this subject.
Theodosius DobzhanskyNo evidence is powerful enough to force acceptance of a conclusion that is emotionally distasteful.
Theodosius DobzhanskyNatural selection must be replaced by eugenical artificial selection. This idea constitutes the sound core of eugenics, the applied science of human betterment.
Theodosius DobzhanskyThe foundations of population genetics were laid chiefly by mathematical deduction from basic premises contained in the works of Mendel and Morgan and their followers. Haldane, Wright, and Fisher are the pioneers of population genetics whose main research equipment was paper and ink rather than microscopes, experimental fields, Drosophila bottles, or mouse cages. Theirs is theoretical biology at its best, and it has provided a guiding light for rigorous quantitative experimentation and observation.
Theodosius Dobzhansky