Indeed, while Nature is wonderfully inventive of new structures, her conservatism in holding on to old ones is still more remarkable. In the ascending line of development she tries an experiment once exceedingly thorough, and then the question is solved… — John M. Tyler Copy Share Image
Indeed, while Nature is wonderfully inventive of new structures, her conservatism in holding on to old ones is still more remarkable. In the ascending… — John M. Tyler Copy Share Image
The cell was the first invention of the animal kingdom, and all higher animals are and must be cellular in structure. Our tissues were… — John M. Tyler Copy Share Image
One of my friends, reading the title of these lectures [The Whence and Whither of Man] said: "Of man's origin you know nothing, of… — John M. Tyler Copy Share Image
![“One of my friends, reading the title of these lectures [The Whence and Whither of Man] said: "Of man's origin you know nothing, of his future you know less."” quote by John M. Tyler](https://sms4smile.com/quotes/img-quotes/0bf/john-m-tyler-75548_knowledge_one-of-my-friends-reading-the-title-of-t_2777704.jpg)