The Kingdom of Man

A History of Science — Volume 2

Darwin and Modern Science

On the Relations of Man to the Lower Animals

The Works of Aristotle the Famous Philosopher Containing his Complete Masterpiece and Family Physician; his Experienced Midwife, his Book of Problems and his Remarks on Physiognomy

Manhood of Humanity.

Human, All-Too-Human: A Book for Free Spirits, Part 1 Complete Works, Volume Six

Die Naturwissenschaften in ihrer Entwicklung und in ihrem Zusammenhange, I. Band Von den Anfängen bis zum Wiederaufleben der Wissenschaften

Die Naturwissenschaften in ihrer Entwicklung und in ihrem Zusammenhange, II. Band Von Galilei bis zur Mitte des XVIII. Jahrhunderts

A History of Magic and Experimental Science, Volume 2 (of 2) During the First Thirteen Centuries of Our Era

Classics of modern science