'Tis the merry nightingale that crowds and hurries and precipitates, with fast thick warble, his delicious notes, as he were fearful that an April night would be too short for him to utter forth his love-chant, and disburden his full soul of all its music. [ Coleridge ]

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. [ Thoreau ]