These are quotes that quicken my faith in Christ.  They are arranged in the order of the source’s surname.

You have made us for yourself, O Lord, and our hearts are restless until they rest in you – Augustine of Hippo (354-430)

“When Christ calls a man, he bids him come and die.”  – Dietrich Bonhoeffer (1906-1945)

“Do you believe in the existence of Socrates? Alexander the Great? Julius Caesar? If historicity is established by written records in multiple copies that date originally from near contemporaneous sources, there is far more proof for Christ’s existence than for any of theirs.”  Dinesh D’Souza  

“I like your Christ, I do not like your Christians. Your Christians are so unlike your Christ.”  –  Mahatma Gandhi  (1869-1948)

“A proper ‘fear of God’ is understood to involve much joy and a desire to orientate one’s life around God and His purposes.”  Tom Larsen

“Enemy-occupied territory – that is what this world is.”  C.S. Lewis (1898-1963) in Mere Christianity (Book II, Chapter 2)

“There are five Gospels. Matthew, Mark, Luke, John, and the Christian, and some people will never read the first four.”  – Irish evangelist Gipsy Smith (1860-1947; also spelled “Gypsy”)

“Only one life, ’twill soon be past,
Only what’s done for Christ will last.”  C.T. Studd (1860-1931)

“God’s work done in God’s way will never lack for God’s supply.” – J. Hudson Taylor (1832-1905)

“To know Him, and to make Him known.”  – Unknown
(Some versions read “To know Christ, and to make Him known.”)

See other quotes referenced in the comment thread below.  Also, you can click on the “Category” of “Quotes” to the right.

Methodist Preachers in John Wesley’s Days

Peter Cartwright (1785-1872), who had himself been a circuit-riding preacher in America in the wake of John Wesley’s ministry, wrote in his autobiography (The Autobiography of Peter Cartwright, 1856) about what happened when a man felt called of God to preach.

“[I]nstead of hunting up a college or Biblical Institute, [he] hunted up a hardy pony, and some traveling apparatus, and with his library always at hand, namely, a Bible, Hymn book, and Discipline, he started, and with a text that never wore out nor grew stale, he cried, ‘Behold, the Lamb of God, that taketh away the sin of the world’.”

(The Scripture quoted is John 1:29; my source for this Cartwright quote can be found here.)

Cartwright’s words remind me of something Brother Lawrence (for explanation on him, see here) wrote in The Practice of the Presence of God:

“Were I a preacher, I would, above all other things, preach the practice of the presence of God. “

I’m quite struck by the similarity of the two ideas (that is, Peter Cartwright’s and Brother Lawrence’s): both remind us that living according to the reality of God’s omnipresence is the simplest, and yet the most seldom achieved, task in the pursuit of life with God.