In every animal which has not passed the limit of its development, a more frequent and continuous use of any organ gradually strengthens, develops and enlarges that organ, and gives it a power proportional to the length of time it… — Jean-Baptiste Lamarck Copy Share Image
The great age of the earth will appear greater to man when he understands the origin of living organisms and the reasons for the gradual development and improvement of their organization. This antiquity will appear even greater when he realizes… — Jean-Baptiste Lamarck Copy Share Image
One must believe that every living thing whatsoever must change insensibly in its organization and in its form... One must therefore never expect to… — Jean-Baptiste Lamarck Copy Share Image
All known living bodies are sharply divided into two special kingdoms, based upon the essential differences which distinguish animals from plants, and in spite… — Jean-Baptiste Lamarck Copy Share Image
After having produced aquatic animals of all ranks and having caused extensive variations in them by the different environments provided by the waters, nature… — Jean-Baptiste Lamarck Copy Share Image
What nature does in the course of long periods we do every day when we suddenly change the environment in which some species of… — Jean-Baptiste Lamarck Copy Share Image
In every animal which has not passed the limit of its development, a more frequent and continuous use of any organ gradually strengthens, develops… — Jean-Baptiste Lamarck Copy Share Image
A sound Physics of the Earth should include all the primary considerations of the earth's atmosphere, of the characteristics and continual changes of the… — Jean-Baptiste Lamarck Copy Share Image
On our planet, all objects are subject to continual and inevitable changes which arise from the essential order of things. These changes take place… — Jean-Baptiste Lamarck Copy Share Image
All knowledge that is not the real product of observation, or of consequences deduced from observation, is entirely groundless and illusory. — Jean-Baptiste Lamarck Copy Share Image
“First Law In every animal which has not passed the limit of its development, a more frequent and continuous use of any organ gradually… — Jean-Baptiste Lamarck Copy Share Image
All the acquisitions or losses wrought by nature on individuals, through the influence of the environment in which their race has long been placed,… — Jean-Baptiste Lamarck Copy Share Image
