Hypatia of Alexandria (c. 360–415 CE)
A philosopher who presided over a convergence of science and inquiry, Hypatia’s approach to rigorous thinking can be analogized to the disciplined inquiry we apply to sleep. Her commitment to reason invites us to test sleep strategies with careful observation, rather than superstition or fashionable trends. In the language of sleep hygiene, Hypatia would applaud a method that treats rest as a practice—refining routines through repeated, skeptical review.