The “four tempers” in AppleTV+’s hit show, ‘Severance,’ were inspired by the four temperaments, an ancient Greek philosophy ...

Developed by ancient Greek thinkers in the 5th century BCE, the theory of the four humors continued to develop during the ...

The physician posited that there were four human temperaments determined by levels of different bodily fluids (aka “humors”). Below are the four temperaments and their characteristics.