Theodosius Dobzhansky

Natural selection acts only by taking advantage of slight successive variations.

Man's place in nature is not fixed, but evolving.

The beauty of the living world is a delight to the mind.

Genetics is the key to understanding evolution.

The future of mankind depends on its understanding of evolution.

Variation is the raw material of evolution.

Life is a continuous process of adaptation.

The theory of evolution is a fact, not a hypothesis.

Human beings are the most complex products of evolution.

The interplay of heredity and environment shapes the organism.

Evolution leads to increasing complexity.

Faith and science are complementary.

The gene pool is the heritage of the species.

Mankind is evolving culturally as well as biologically.

The wonder of life is in its diversity.

Natural selection is the architect of adaptation.

Our knowledge of evolution is incomplete, but profound.

The meaning of life is found in its evolutionary journey.

Biology reveals the interconnectedness of all life.

Evolution is both creative and destructive.