Use your health while you have it, my dear friend and brother. Do not cast away peculiar opportunities that may never come again. You know not when your last Sabbath with your people may come. Speak for eternity. Above all things, cultivate your own spirit. A word spoken by you when your conscience is clear, and your heart full of God's Spirit, is worth ten thousand words spoken in unbelief and sin.

Memoir and Remains of the Rev. Robert Murray M'Cheyne: Minister of St. Peter's Church, Dundee (ed. 1846)