“Howard University is but one of the many institutions which have grown up in this country, dedicated to this purpose of preserving one of the races of men and fitting it for its largest usefulness. Here is a people adapted, as most people are not, to life in the tropics. They are capable of redeeming vast luxuriant areas of unexampled productivity, and of reclaiming them for the sustenance of mankind and the increasing security of the human community. It is a great destiny, to which we may now look forward with confidence that it will be fully realized.”

Augustus (1937)

This passage suggests that more than than 50 years before the publication of On the Origin of Species, Hutton anticipated Darwin's theory of natural selection.
Source: An Investigation into the Principles of Knowledge (1794)

Source: 1860s, Second State of the Union address (1862)
Context: That portion of the earth's surface which is owned and inhabited by the people of the United States is well adapted to be the home of one national family, and it is not well adapted for two or more. Its vast extent and its variety of climate and productions are of advantage in this age for one people, whatever they might have been in former ages. Steam, telegraphs, and intelligence have brought these to be an advantageous combination for one united people.

Writings of the Young Marx on Philosophy and Society, L. Easton, trans. (1967), p. 38
Reflections of a Youth on Choosing an Occupation (1835)

The Sacred Pipe (1953)

Kosmos (1847)
Context: If we would indicate an idea which, throughout the whole course of history, has ever more and more widely extended its empire, or which, more than any other, testifies to the much-contested and still more decidedly misunderstood perfectibility of the whole human race, it is that of establishing our common humanity — of striving to remove the barriers which prejudice and limited views of every kind have erected among men, and to treat all mankind, without reference to religion, nation, or color, as one fraternity, one great community, fitted for the attainment of one object, the unrestrained development of the physical powers. This is the ultimate and highest aim of society, identical with the direction implanted by nature in the mind of man toward the indefinite extension of his existence. He regards the earth in all its limits, and the heavens as far as his eye can scan their bright and starry depths, as inwardly his own, given to him as the objects of his contemplation, and as a field for the development of his energies. Even the child longs to pass the hills or the seas which inclose his narrow home; yet, when his eager steps have borne him beyond those limits, he pines, like the plant, for his native soil; and it is by this touching and beautiful attribute of man — this longing for that which is unknown, and this fond remembrance of that which is lost — that he is spared from an exclusive attachment to the present. Thus deeply rooted in the innermost nature of man, and even enjoined upon him by his highest tendencies, the recognition of the bond of humanity becomes one of the noblest leading principles in the history of mankind.

World Civilisations: “ Bridging the World’s Divides http://kofiannanfoundation.org/newsroom/news/2010/10/history-world-100-objects-episode-98”. Lecture given at the British Museum London.
Context: These values: compassion; solidarity; respect for each other - already exist in all our great religions. We can begin by reaffirming and demonstrating that the problem is not the Koran, nor the Torah nor the Bible. As I have often said, the problem is never the faith. It is the faithful, and how we behave towards each other. It is these great, enduring and universal principles which are also enshrined in the Charter of the United Nations and the Universal Declaration of Human Rights. We can use these values – and the frameworks and tools we have based on them - to bridge divides and make people feel more secure and confident of the future.

Source: Aphorisms and Reflections (1901), p. 221