Evolution is a theory of organic change, but it does not imply, as many people assume, that ceaseless flux is the irreducible state of nature and that structure is but a temporary incarnation of the moment. Change is more often a rapid transition between stable states than a continuous transformation at slow and steady rates. We live in a world of structure and legitimate distinction. Species are the units of nature's morphology.
Stephen Jay GouldRelated topics
change evolution flux irreducible live moment morphology nature organic rapid slow stable state transformation transition StatesRelated quotes
But there is another and greater distinction for which no truly natural or religious reason can be assigned, and that is, the distinction of men into KINGS and SUBJECTS. Male and female are the distinctions of nature, good and bad the distinctions of heaven; but how a race of men came into the world so exalted above the rest, and distinguished like some new species, is worth enquiring into, and whether they are the means of happiness or of misery to mankind.
Thomas Paine
Dialectical thought understands the critical tension between "is” and "ought” first as an ontological condition, pertaining to the structure of Being itself. However, the recognition of this state of Being - its theory - intends from the beginning a concrete practice. Seen in the light of a truth which appears in them falsified or denied, the given facts themselves appear false and negative.
Herbert Marcuse
Tis impossible to judge with much Præcision of the true Motives and Qualities of human Actions, or of the Propriety of Rules contrived to govern them, without considering with like Attention, all the Passions, Appetites, Affections in Nature from which they flow. An intimate Knowledge therefore of the intellectual and moral World is the sole foundation on which a stable structure of Knowledge can be erected.
John Adams
I find it expressed in various passages of Scripture that the fact that God knows things while in a state of possibility, when their existence belongs to the future, does not change the nature of the possible in any way; that nature remains unchanged; and the knowledge of the realisation of one of several possibilities does not yet effect that realisation. This is likewise one of the fundamental principles of the Law of Moses concerning which there is no doubt nor any dispute.
Maimonides
Great problems are now being handled, keeping every thinking man in suspense; the unity or multiplicity of human races; the creation of man 1,000 years or 1,000 centuries ago; the fixity of species, or the slow and progressive transformation of one species into another; the eternity of matter; the idea of a God unnecessary: such are some of the questions that humanity discusses nowadays.
Louis Pasteur