For a January Birthday

WHY count the evanescent years?
Such empty pastime palls.
What quality of eld inheres
In linkèd numerals?
Away with mathematick fears!
Come prove the good old adage true: —
The more shall make more merry.
If every year be gay, and new,
And young as January, —
Better a many than a few.
Methought I saw a robin’s wing
Among the budding trees!
What need of chilly lingering
Mid wintry reveries,
When life is at the edge of spring?