So, we'll go no more a-roving is a short poem by Byron, published after his death in 1830, in which he contemplates the reality of growing old and the loss of youth. The full text of the poem is as follows:
So, we'll go no more a-roving
So late into the night,
Though the heart be still as loving,
And the moon be still as bright.
For the sword outwears its sheath,
And the soul wears out the breast,
And the heart must pause to breathe,
And love itself have rest.
Though the night was made for loving,
And the day returns too soon,
Yet we'll go no more a-roving
By the light of the moon.