When it came to the aborigines, he had little to say of the South American Indians, but of North American Indians he could speak "somewhat from his own knowledge" as well as from the observations of others better acquainted with them and on whose truth and judgment he could rely.

Not only they are well formed in body and in mind as the _homo sapiens Europaeus_, but from what we know of their eloquence it is of a superior lustre.... I may challenge the whole orations of Demosthenes and Cicero, and of many more prominent orators, if Europe has furnished any more eminent, to produce a single passage, superior to the speech of Logan, a Mingo chief, to Lord Dunmore when Governor of this State.

Thomas Jefferson — Part 90

But his temper was thoroughly aroused when he discovered that Abbé Raynal had undertaken to apply the theory of Buffon to the white men who had settled in America.

Thomas Jefferson — Part 90

If this were true and if climateric conditions were such as to prevent mental and physical growth there would be little hope for the newly constituted country to ever become a great nation. Nature itself pronouncing against the Americans what chance could they have to be able to ever come up to the level of the older nations. Sentenced to remain forever an inferior race, this struggle to conquer independence would have proved futile, and sooner or later, they would fall the prey of superior people.

Thomas Jefferson — Part 90

Never before had Jefferson been so deeply stirred and moved, never before had he felt so thoroughly American as in his spirited answer to Raynal, when he claimed for the new-born country not only unlimited potentialities, but actual superiority over the mother country:

"America has not yet produced one good poet." When we shall have existed as a people as long as the Greeks did before they produced a Homer, the Romans a Virgil, the French a Racine and Voltaire, the English a Shakespeare and Milton, should this reproach be still true, we will inquire from what unfriendly causes it has proceeded, that the other countries of Europe and quarters of the earth shall not have inscribed any name in the roll of poet. But neither has America produced "one able mathematician, one man of genius in a single art or science." In war we have produced a Washington, whose memory will be adored while liberty shall have votaries, whose name will triumph over time, and will in future ages assume its just station among the most celebrated worthies of the world, when that wretched philosophy shall be forgotten which would have arranged him among the degeneracies of nature. In Physics we have produced a Franklin, than whom no one of the present age has made more important discoveries, nor has enriched philosophy with more, or more ingenious solutions of the phaenomena of nature.... As in philosophy and war, so in government, in oratory, in painting, in the plastic arts, we might show that America, though but a child of yesterday, has already given hopeful proofs of genius, as well as of the nobler kinds, which arouse the best feelings of man, which call him into action, which substantiate his freedom, and conduct him to happiness, as of the subordinate, which serve to amuse him only. We therefore suppose that this reproach is as unjust as it is unkind: and that, of the geniuses which adorn the present age, America contributes her full share.... The present war having so long cut off all communications with Great Britain, we are not able to make a fair estimate of the state of science in the country. The spirit in which she wages war, is the only sample before our eyes, and that does not seem the legitimate offspring either of science or civilization. The sun of her glory is fast descending to the horizon. Her Philosophy has crossed her channel, her freedom the Atlantic, and herself seems passing to that awful dissolution whose issue is not given human foresight to scan.