"'How,' says one, 'Shall God wipe away my tears in heaven if I shed none on earth? And how shall I reap in joy if I sow not in tears? '" - Thomas Brooks, as quoted in Spurgeon's Sermon Notes
Further recommended reading & listening:
The Best of The Daily Spurgeon
The Forgotten Spurgeon, by Iain Murray
A Defense of Calvinism - by Charles Spurgeon