Jean-Baptiste Lamarck
Proposed an early theory of evolution based on the inheritance of acquired characteristics, though later superseded by Darwin's theory.
Most quoted
"It is not the organs, that is to say, the nature and form of the parts of the body of an animal, which have given rise to its habits and its particular faculties. It is, on the contrary, its habits, its manner of life, and the circumstances in which its ancestors have found themselves, which have, in the course of time, really constituted the form of its body, the number and state of its organs, and, in short, the faculties which it possesses."
— from Philosophie Zoologique, 1809
"Second Law: All the acquisitions or losses wrought by nature on individuals, through the influence of the environment in which their race has long been placed, and hence through the influence of the predominant use or permanent disuse of any organ; all these are preserved by reproduction to the new individuals which arise, provided that the acquired modifications are common to both sexes, or at least to the individuals which produce the young."
— from Philosophie Zoologique, 1809
"It is not the organs, that is to say, the nature and form of the parts of the body, that have given rise to their habits and particular faculties, but it is, on the contrary, their habits, their manner of life, and the circumstances in which the individuals of which the race is formed have found themselves, that have with time constituted the form of the body, the number and state of their organs, and finally the faculties which they possess."
— from Philosophie Zoologique, 1809
All quotes by Jean-Baptiste Lamarck (412)
The greatest obstacle to knowledge is not ignorance, but the illusion of knowledge. A rather common affliction, I find.
To deny the influence of environment on form is to deny the very air we breathe. A rather difficult feat, even for the most stubborn among us.
The history of life is not a straight line, but a meandering river, constantly carving new paths. Those who insist on a straight line will surely get lost.
Some prefer their theories to be divinely ordained, rather than painstakingly observed. It certainly saves on the effort of observation, I suppose.
The very act of living is a testament to the power of adaptation. To ignore it is to ignore the very pulse of existence.
If a creature constantly strives for something, it will eventually achieve it, or at least its descendants will. A rather optimistic view, perhaps, but not without its merits.
The world is not a static tableau, but a dynamic dance. Those who insist on a fixed pose will surely be left behind.
It is a curious thing, this human tendency to resist new ideas, especially when they challenge the comfortable old ones. One might call it intellectual inertia, or perhaps, simply stubbornness.
The idea that life is constantly evolving is not a threat, but a wonder. A wonder that some, unfortunately, prefer to ignore.
Nature, in her wisdom, does not waste. What is not used, is eventually discarded. A lesson in efficiency, if nothing else.
Some prefer their scientific truths to be absolute and unchanging. I, however, find the beauty in the fluidity of discovery.
The very act of striving for a goal, even if it is never fully reached in one lifetime, shapes the generations to come. A rather poetic notion, wouldn't you agree?
To believe that all creatures were created perfectly formed is to deny them the very joy of becoming. A rather static view of existence.
The world is a grand symphony, and each species plays its part, constantly adapting its tune. Some, however, prefer a silent, unchanging score.
If a creature constantly uses an organ, it will strengthen and develop. If it does not, it will weaken and disappear. A rather simple, yet profound, observation.
Nature, in her infinite patience, allows for countless experiments. We, with our finite lives, often demand immediate answers.
Some prefer their science to be a confirmation of their prejudices. I, however, find the challenge of overturning them to be far more exhilarating.
The very act of living is a continuous process of becoming. To deny this is to deny the very essence of what it means to be alive.
The world is not a finished book, but an ongoing narrative. Those who insist on a closed ending will surely miss the next chapter.
It is a peculiar human tendency to resist the obvious when it challenges a deeply held belief. One might call it intellectual stubbornness, or perhaps, simply fear of the new.
Contemporaries of Jean-Baptiste Lamarck
Other Biologys born within 50 years of Jean-Baptiste Lamarck (1744–1829).