German Biologist Quotes

Paul Ehrlich

August Weismann

Ernst Mayr

Wilhelm Roux

Fritz Müller

As a consequence, geneticists described evolution simply as a change in gene frequencies in populations, totally ignoring the fact that evolution consists of the two simultaneous but quite separate phenomena of adaptation and diversification.

There prevails here [Charleston] a finer manner of life, and on the whole, there are more evidences of courtesy than in the northern cities.

Johann David Schoepf

When we are confronted with facts which we see no possibility of understanding save on a single hypothesis, even though it be an undemonstratable one, we are naturally led to accept the hypothesis, at least until a better one can be found.

August Weismann

Much testing; accuracy and precision in experiment; no guesswork or self-deception.

Developmental mechanics...is the doctrine of the causes of organic forms.

Just as in Christian countries there is a catechism of morals, which everyone knows by heart, but which no one considers it his duty to follow, or expects to see followed by others - so zoology also has its dogmas, which are just as generally professed as they are denied in practice.

Parasitism, mutualism, lichenism, etc., are each special cases of that one general association for which the term symbiosis is proposed as the collective name.

Heinrich Anton de Bary

At last, in the most recent times, an unexpected knowledge of the secret life energies of bacteria has been revealed, through which they rule with demoniacal power over the weal and woe, and even over the life and death of man.