Charles Darwin, known for his theory of natural selection, noticed that his later life included a “loss of happiness.” While he never acknowledged that it might have been related to his changing worldview, which eventually rejected the idea of a higher power in favor of philosophical naturalism, it is hard not to wonder about the connection.
Darwin observed,
“Up to the age of thirty, or beyond it, poetry of many kinds . . . gave me great pleasure, and even as a schoolboy I took intense delight in Shakespeare. . . . Formerly pictures gave me considerable, and music very great delight. But now for many years I cannot endure to read a line of poetry: I have tried lately to read Shakespeare, and found it so intolerably dull that it nauseated me. I have also almost lost my taste for pictures or music. . . .
I retain some taste for fine scenery, but it does not cause me the exquisite delight which it formerly did. . . . My mind seems to have become a kind of machine for grinding general laws out of large collections of facts. . . . The loss of these tastes is a loss of happiness, and may possibly be injurious to the intellect, and more probably to the moral character, by enfeebling the emotional part of our nature.