Early to bed rhymes

"Early To Bed" is a very old English proverb and nursery rhyme, dating back as least to the 15th century. In 1639 the proverb was recorded in print in its current form in a book called "Paroemiologia" by John Clarke. Another similar proverb "The cock doth crow to let you know, If you be wise, 'Tis time to rise" was in use around 1830. It is believed the two proverbs came together to form one version of the nursery rhyme.