Answer: Do not be lazy; we are all running out of time.
Explanation: In Shakespeare's "Sonnet 100", the central idea of the third quatrain is Muse, do not be lazy; we are all running out of time. The Muse is seen by various poets as the source of inspiration. Shakespeare is blaming the Muse for being forgetful, and for spending her time idly. He tells the muse to be back before Time's scythe gets him.