Eastern Bluebird
Measure your health by your sympathy with morning and spring. If there is no response in you to the awakening of nature — if the prospect of an early morning walk does not banish sleep, if the warble of the first bluebird does not thrill you — know that the morning and spring of your life are past. Thus may you feel your pulse.
Henry David Thoreau
Journal: February 25, 1859

