Sonnet 51

Thus can my love excuse the slow offence 
Of my dull bearer when from thee I speed -
'From where thou art why should I haste me thence?
Till I return, of posting is no need.'

O what excuse will my poor beast then find,
When swift extremity can seem but slow?
Then should I spur, though mounted on the wind.
In winged speed no motion shall I know,
Then can no horse with my desire keep pace.
Therefore desire, of perfect'st love being made,
Shall neigh, no dull flesh, in his fiery race.

But love, for love, thus shall excuse my jade,
'Since from thee going, he went wilful-slow,
Towards thee I'll run, and give him leave to go.'