
The book opens with a bold claim that every creature on Earth shares a common bond—physically, mentally, and morally. Drawing on zoology, anthropology, and philosophy, it argues that humanity’s sense of superiority blinds us to the deep kinship we have with animals, from the tiniest insect to the great ape. Through personal anecdotes and scientific observations, the author invites listeners to reconsider what it means to be human in a shared biosphere.
Divided into two main parts, the work first maps our biological lineage—tracing humanity from simple organisms through vertebrates, mammals, and primates—before turning to the moral implications of that lineage. Chapters on egoism, altruism, and universal ethics challenge entrenched beliefs and propose a more compassionate framework for how humans treat other species. Though written in the early 1900s, its arguments resonate today, offering a thoughtful meditation on evolution, responsibility, and the future of our relationship with the animal world.
Language
en
Duration
~8 hours (487K characters)
Publisher of text edition
Project Gutenberg
Credits
Produced by L. Reeves from scans generously made available by the Internet Archive.
Release date
2020-02-09
Rights
Public domain in the USA.
Subjects

1862–1916
A bold early voice for animal rights and social reform, this American writer asked readers to widen their circle of sympathy far beyond their own species. His work blends science, ethics, and a fierce belief in kinship across all living beings.
View all books
by J. Howard (John Howard) Moore

by Thorstein Veblen

by Lewis Henry Morgan

by Charles Horton Cooley

by Ossip Lourié

by E. W. (Ernest Watson) Burgess, Robert Ezra Park

by Georg Simmel

by Charles A. (Charles Abram) Ellwood