From: The Golden Sayings of Epictetus (translated by Hastings Crossley) - from Project Gutenberg.
XVIII
And to this I reply:-- "Friends, wait for God. When He gives the signal, and releases you from this service, then depart to Him. But for the present, endure to dwell in the place wherein He hath assigned you your post. Short indeed is the time of your habitation therein, and easy to those that are minded. What tyrant, what robber, what tribunals have any terrors for those who thus esteem the body and all that belong to it as of no account? Stay; depart not rashly hence!"
