No one, whether young or old, rich or poor, learned or unlearned, should presume to dispense the mysteries of Christ without the strongest of all possible reasons for doing so – the imperative, invincible call of God. No one is to show cause why he ought not to be a Minister: he is to show cause why he should be a Minister. His call to the sacred profession is not the absence of a call to any other pursuit; it is direct, immediate, powerful, to this very department of labour. He is not here because he can be nowhere else, but he is nowhere else because he must be here.
— James Henley Thornwell, “The Call of the Minister,” The Collected Writings of James Henley Thornwell [Carlisle: Banner of Truth, 1974 (1875)], p25