“In man (as the only rational creature on earth) those natural capacities which are directed to the use of his reason are to be fully developed only in the race, not in the individual.”
Second Thesis
Idea for a Universal History from a Cosmopolitan Point of View (1784)
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Immanuel Kant 200
German philosopher 1724–1804Related quotes

Source: The Limits of State Action (1792), Ch. 2

Source: Talks for the Times (1896), "The Importance of Correct Ideals" (1892), p. 272

“The Contradiction in Objectivism,” 1968

Source: The Art of Loving (1956)
Context: To speak of love is not "preaching," for the simple reason that it means to speak of the ultimate and real need of every human being. That this need has been obscured does not mean it does not exist. To analyze the nature of love is to discover its general absence today and to criticize the social conditions which are responsible for this absence. To have faith in the possibility of love as a social and not only exceptional-individual phenomenon, is a rational faith based on the insight into the very nature of man.

Eighth Thesis
Idea for a Universal History from a Cosmopolitan Point of View (1784)

Paris Review interview (1958)
Context: No one is without Christianity, if we agree on what we mean by that word. It is every individual’s individual code of behavior by means of which he makes himself a better human being than his nature wants to be, if he followed his nature only. Whatever its symbol — cross or crescent or whatever — that symbol is man’s reminder of his duty inside the human race. Its various allegories are the charts against which he measures himself and learns to know what he is. It cannot teach a man to be good as the textbook teaches him mathematics. It shows him how to discover himself, evolve for himself a moral codes and standard within his capacities and aspirations, by giving him a matchless example of suffering and sacrifice and the promise of hope.

Of the Origin and Progress of Language (Edinburgh and London: J. Balfour and T. Cadell, 2nd ed., 1774), Vol. I, Book II, Ch. II, pp. 224-225 https://archive.org/stream/originandprogre01conggoog#page/n251/mode/2up.

7 February 1945.
Disputed, The Testament of Adolf Hitler (1945)

The Rights of the Colonists (1772)