In the light of evolution

"Nothing in biology makes sense except in the light of evolution." (Dobhansky)

"Is evolution a theory, a system, or a hypothesis? It is much more it is a general postulate to which all theories, all hypotheses, all systems much henceforward bow and which they must satisfy in order to be thinkable and true. Evolution is a light which illuminates all facts, a trajectory which all lines of though must follow this is what evolution is." (Teilhard de Chardin)