Descent with Modification Quotes

Evolution is a fact. It is the best explanation of what is known from observations. It's a theory as powerful as the theory of gravity.

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

Progressively thinking biologists, both in our country and abroad, saw in Darwinism the only right road to the further development of scientific biology.

Evolution is a process of constant branching and expansion.

The more specific idea of Evolution now reached is - a change from an indefinite, incoherent homogeneity to a definite, coherent heterogeneity, accompanying the dissipation of motion and integration of matter.

Is evolution a theory, a system, or an hypothesis? It is much more: it is a general condition to which all theories, all hypotheses, all systems must bow and which they must satisfy henceforward if they are to be thinkable and true.

On the ordinary view of each species having been independently created, we gain no scientific explanation.

Evolution is all about looking forward.

Evolution is a bankrupt speculative philosophy, not a scientific fact.

You can't even begin to understand biology, you can't understand life, unless you understand what it's all there for, how it arose - and that means evolution.

Darwinism as presented by Darwin contradicted idealistic philosophy, and this contradiction grew deeper with the development of its materialist teaching.

Evolution is not a force but a process. Not a cause but a law.

Evolution is a theory, and it's a theory that you can test. We've tested evolution in many ways. You can't present good evidence that says evolution is not a fact.

Even when Darwin's teaching first made its appearance, it became clear at once that its scientific, materialist core, its teaching concerning the evolution of living nature, was antagonistic to the idealism that reigned in biology.

Man has climbed up from some lower animal form, but he has, as it were, pulled the ladder up after him.

The fact - not theory - that evolution has occurred and the Darwinian theory as to how it occurred have become so confused in popular opinion that the distinction must be stressed.

The creationists repeatedly assert that evolution is a theory, and, indeed, not a scientific theory at all because it is unable to predict future developments. Both statements are untrue. Evolution [phenomenon] is a fact, not theory. It once was a theory but today, as a consequence of observation and testing it is probably the best authenticated actu- ality known to science. There are theories concerning the mechanisms of evolution but no competent student doubts the reality of evolution

Evolutionary biologists are not content merely to explain how variation occurs within limits, however. They aspire to answer a much broader question-which is how complex organisms like birds, and flowers, and human beings came into existence in the first place.

The progress of evolution from President Washington to President Grant was alone evidence to upset Darwin.

If Darwin's theories are true, then we have within us the physical memory of when we were fish or apes.

Evolution is a light illuminating all facts, a curve that all lines must follow.

Charles Darwin got totally hammered, woke up next to a monkey and decided he had to come up with a theory to make it all okay.

Darwin didn't walk around the Galapagos and come up with the theory of evolution. He was exploring, collecting, making observations. It wasn't until he got back and went through the samples that he noticed the differences among them and put them in context.

Spencer's god was Evolution, sometimes also called Progress.

Evolution is a tinkerer.