"An infidel was introduced to a minister with the following remark, 'He never attends public worship.' 'Ah,' said the minister, 'I hope you are mistaken.' 'By no means,' said the stranger. 'I always spend Sunday in settling my accounts.' 'Then alas!' was the calm, but solemn reply, 'you will find, sir, that the day of judgment will be spent in the same manner.'" - G. S. Bowes, as quoted in Spurgeon's Sermon Notes
Further recommended reading & listening:
The Best of The Daily Spurgeon
The Forgotten Spurgeon, by Iain Murray