Books about Human beings
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Manhood of Humanity.
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Human, All Too Human: A Book for Free Spirits
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Human, All-Too-Human: A Book for Free Spirits, Part 2
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Human, All-Too-Human: A Book for Free Spirits, Part 1
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El Hombre Mediocre: Ensayo de psicologia y moral (Spanish)
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The Works of Aristotle the Famous Philosopher
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The nature of man : Studies in optimistic philosophy
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Thoughts on Man, His Nature, Productions and Discoveries
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Menschliches, Allzumenschliches: Ein Buch Fuer Freie Geister (German)
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The Universal Kinship
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On the Relations of Man to the Lower Animals
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On Some Fossil Remains of Man
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The Kingdom of Man
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We Moderns: Enigmas and Guesses
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The Destiny of Man, Viewed in the Light of His Origin
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The Making of a Man
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Der Mensch der Zukunft (German)
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Human Life