Sanity, broadly defined, refers to a state of mental well-being characterized by clarity, logic, and emotional equilibrium. Authors have long wrestled with its limits, frequently contrasting it with insanity or irrationality. Friedrich Hügel pondered how intense emotion might obscure its boundaries, while Carveth Read described it as the ability to recognize one's errors as faults.
Hubert Bland narrowed it down to the strength of resistance, and Oscar Wilde associated it with defiance of societal expectations. Marie Corelli highlighted its role in nurturing empathy, and Arthur Stringer depicted it as a delicate balance with human imperfections. These diverse viewpoints collectively illustrate sanity not as a static condition, but as a fluid interplay of self-awareness, critical thinking, and the ability to manage life's complexities without falling into extremes.