  Complex systems, such as life and languages, are governed by principles of
evolution. The analogy and comparison between biology and
linguistics\cite{alphafold2, RoseTTAFold, lang_virus, cell language, faculty1,
language of gene, Protein linguistics, dictionary, Grammar of pro_dom,
complexity, genomics_nlp, InterPro, language modeling, Protein language
modeling} provide a computational foundation for characterizing and analyzing
protein sequences, human corpora, and their evolution. However, no general
mathematical formula has been proposed so far to illuminate the origin of
quantitative hallmarks shared by life and language. Here we show several new
statistical relationships shared by proteins and words, which inspire us to
establish a general mechanism of evolution with explicit formulations that can
incorporate both old and new characteristics. We found natural selection can be
quantified via the entropic formulation by the principle of least effort to
determine the sequence variation that survives in evolution. Besides, the
origin of power law behavior and how changes in the environment stimulate the
emergence of new proteins and words can also be explained via the introduction
of function connection network. Our results demonstrate not only the
correspondence between genetics and linguistics over their different
hierarchies but also new fundamental physical properties for the evolution of
complex adaptive systems. We anticipate our statistical tests can function as
quantitative criteria to examine whether an evolution theory of sequence is
consistent with the regularity of real data. In the meantime, their
correspondence broadens the bridge to exchange existing knowledge, spurs new
interpretations, and opens Pandora's box to release several potentially
revolutionary challenges. For example, does linguistic arbitrariness conflict
with the dogma that structure determines function?
