Altruism Its Nature and Varieties

Oriental Religions and Christianity A Course of Lectures Delivered on the Ely Foundation Before the Students of Union Theological Seminary, New York, 1891

Nature and Human Nature

The Method by Which the Causes of the Present and Past Conditions of Organic Nature Are to Be Discovered; the Origination of Living Beings Lecture III. (of VI.), "Lectures to Working Men", at the Museum of Practical Geology, 1863, on Darwin's Work_ "Orig