John Tyler
John Tyler
John Tylerwas the tenth President of the United States. He was also, briefly, the tenth vice president, elected to that office on the 1840 Whig ticket with William Henry Harrison. Tyler became president after Harrison's death in April 1841, only a month after the start of the new administration. Known to that point as a supporter of states' rights, which endeared him to his fellow Virginians, his actions as president showed that he was willing to back nationalist policies as...
NationalityAmerican
ProfessionPresident
Date of Birth29 March 1790
CountryUnited States of America
John Tyler quotes about
I can never consent to being dictated to.
So far as it depends on the course of this government, our relations of good will and friendship will be sedulously cultivated with all nations.
The United States have adventured upon a great and noble experiment, which is believed to have been hazarded in the absence of all previous precedent - that of total separation of Church and State. No religious establishment by law exists among us. The conscience is left free from all restraint and each is permitted to worship his Maker after his own judgement.
Popularity, I have always thought, may aptly be compared to a coquette-the more you woo her, the more apt is she to elude your embrace.
I contend that the strongest of all governments is that which is most free.
Wealth can only be accumulated by the earnings of industry and the savings of frugality.
Evolution, cell biology, biochemistry, and developmental biology have made extraordinary progress in the last hundred years - much of it since I was weaned on schoolboy biology in the 1930s. Most striking of all is the sudden eruption of molecular biology starting in the 1950s.
As in all of biology, comparative studies showing differences among species are often helpful for a better understanding of the basic mechanisms; with all its advantages, there is a danger of clinging exclusively to one model organism.
That the role of size has been to some degree neglected in biology may lie in its simplicity. Size may be a property that affects all of life, but it seems pallid compared to the matter which makes up life. Yet size is an aspect of the living that plays a remarkable, overreaching role that affects life's matter in all its aspects.
Any object, whether animate or inanimate, will have a size. Airplanes, boats, or musical string instruments vary in size just like animals and plants, and in all cases, their size and their material construction are totally different matters even though they affect one another.
The sudden appearance of mushrooms after a summer rain is one of the more impressive spectacles of the plant world.
The reason for natural selection's great success is that it provides a satisfying explanation of how evolution might have occurred: individual organisms vary, and if those variations are inherited, the successful ones will survive and propagate and pass down their desirable traits to succeeding generations.
In the seventeenth century, it was held by some that inside a human sperm there was a minute human being - a homunculus - that was planted inside the womb. Development consisted of the miniature homunculus enlarging and passing through birth and on to maturity-just like inflating a balloon.
Changes in size are not a consequence of changes in shape, but the reverse: changes in size often require changes in shape. To put it another way, size is a supreme regulator of all matters biological. No living entity can evolve or develop without taking size into consideration. Much more than that, size is a prime mover in evolution.