Prolonged sunshine spoils the spirit so that a single cloudy day depresses it.

Evidence

It was another cloudless morning, one of the many here on which one awakes early, refreshed, and ready to enjoy the fatigues of another day. In our sunless, misty climate you do not know the influence which persistent fine weather exercises on the spirits. I have been ten months in almost perpetual sunshine, and now a single cloudy day makes me feel quite depressed. — Isabella L. Bird, A Lady’s Life in the Rocky Mountains, 184

Categorization

• XREF: Connects to prior highlights on how ambient environment (noise, light, weather) conditions mood and perception rather than merely setting scenery. — connects to: Fear of imagined danger vanishes with morning sunlight and rested sleep. — Isabella L. Bird, A Lady’s Life in the Rocky Mountains, 196
• APHORISMS: Reads as durable life-wisdom: sustained good fortune recalibrates the baseline so minor adversity registers as loss.

Broader Connections

• Fear of imagined danger vanishes with morning sunlight and rested sleep. #complicates (0.90) — Isabella L. Bird, A Lady’s Life in the Rocky Mountains, 196