Johann Caspar Lavater

Swiss pastor and physiognomist who wrote Essays on Physiognomy (1775–1778) — arguing that character can be read from facial features — influencing European culture, attracting Goethe's collaboration and later criticism, and inspiring the criminology of Lombroso and the racial science of the 19th century.

Created the pseudoscience of physiognomy as a serious intellectual program — the claim that the face is an index to the soul has roots in Aristotle but Lavater systematized it, illustrated it, and spread it across Europe, making it the 18th century's most widely read scientific-theological synthesis.