“Without risks or prizes for the darer, history would be insipid indeed; and there is a type of military character which every one feels that the race should never cease to breed, for everyone is sensitive to its superiority.”

1910s, Theodore Roosevelt — An Autobiography (1913)
Context: It is impossible to win the great prizes of life without running risks, and the greatest of all prizes are those connected with the home. No father and mother can hope to escape sorrow and anxiety, and there are dreadful moments when death comes very near those we love, even if for the time being it passes by. But life is a great adventure, and the worst of all fears is the fear of living.

Though often attributed to Garvey, this statement first appears in Charles Siefert's 1938 pamphlet, The Negro's or Ethiopian's Contribution to Art.
Misattributed

Section IX, "Man Alone with Himself" / aphorism 509
Human, All Too Human (1878), Helen Zimmern translation

Source: Vestiges of the Natural History of Creation (1844), p. 276
Context: Is our race but the initial of the grand crowning type? Are there yet to be species superior to us in organization, purer in feeling, more powerful in device and act, and who shall take a rule over us! There is in this nothing improbable on other grounds. The present race, rude and impulsive as it is, is perhaps the best adapted to the present state of things in the world; but the external world goes through slow and gradual changes, which may leave it in time a much serener field of existence. There may then be occasion for a nobler type of humanity, which shall complete the zoological circle on this planet, and realize some of the dreams of the purest spirits of the present race.

Reported in The Clay Code, or Text-Book of Eloquence, a Collection of Axioms, Apothegms, Sentiments … Gathered from the Public Speeches of Henry Clay, ed. G. Vandenhoff (1844), p. 93.

Foreword
is 5 (1926)
Context: There are certain things in which one is unable to believe for the simple reason that he never ceases to feel them. Things of this sort— things which are always inside of us and in fact are us and which consequently will not be pushed off or away where we can begin thinking about them— are no longer things; they, and the us which they are, equals A Verb; an IS.

Heretics and Heresies (1874)
Context: By this time the whole world should know that the real Bible has not yet been written, but is being written, and that it will never be finished until the race begins its downward march, or ceases to exist.
The real Bible is not the work of inspired men, nor prophets, nor apostles, nor evangelists, nor of Christs. Every man who finds a fact, adds, as it were, a word to this great book. It is not attested by prophecy, by miracles or signs. It makes no appeal to faith, to ignorance, to credulity or fear. It has no punishment for unbelief, and no reward for hypocrisy. It appeals to man in the name of demonstration. It has nothing to conceal. It has no fear of being read, of being contradicted, of being investigated and understood. It does not pretend to be holy, or sacred; it simply claims to be true. It challenges the scrutiny of all, and implores every reader to verify every line for himself. It is incapable of being blasphemed. This book appeals to all the surroundings of man. Each thing that exists testifies of its perfection. The earth, with its heart of fire and crowns of snow; with its forests and plains, its rocks and seas; with its every wave and cloud; with its every leaf and bud and flower, confirms its every word, and the solemn stars, shining in the infinite abysses, are the eternal witnesses of its truth.

Source: BBC Documentary based on Adam Hochschild's 'King Leopold's Ghost'
Congo: White King, Red Rubber, Black Death