On This Day: The discovery of octonions by John T. Graves, who denoted them with a boldface... (1843)

On December 26, 1843: The discovery of octonions by John T. Graves, who denoted them with a boldface O, was announced to his mathematician friend William Hamilton, discoverer of quaternions, in a letter on this date.

This historical event can serve as a powerful sermon illustration about God's creation and human discovery. Consider using it when preaching about discovery.