An observation by Henry David Thoreau on "an evidence of perfect health"

On this day in 1857, Henry David Thoreau wrote the following observation in his journal:

I had yesterday a kink in my back and a general cold, and as usual it amounted to a cessation of life. I lost for the time my rapport or relation to nature. Sympathy with nature is an evidence of perfect health. You cannot perceive beauty but with a serene mind.

Source: Daily Observations: Thoreau on the Days of the Year (2005), edited by Steve Grant

Henry David Thoreau (1817-1862)