Pat answers to complex problems are the hallmark of intellectual mediocrity

Nothing in biology makes sense except in the light of evolution.

Scientists often have a naive faith that if only they could discover enough facts about a problem, these facts would somehow arrange themselves in a compelling and true solution.

The more we know, the better we realize that our knowledge is a little island in the midst of an ocean of ignorance.

The 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.

Natural selection must be replaced by eugenical artificial selection. This idea constitutes the sound core of eugenics, the applied science of human betterment.

Nature's stern discipline enjoins mutual help at least as often as warfare. The fittest may also be the gentlest.