"An aged Christian, lying on his death bed in a state of such extreme weakness that he was often entirely unconscious of all around him, was asked the cause of his perfect peace. He replied, 'When I'm able to think, I think of Jesus. And when I am not able to think, I know Jesus is thinking of me.'" (Source: Spurgeon's Sermon Notes)
Recommended reading:
The Conversion of Charles Spurgeon
The Forgotten Spurgeon, by Iain Murray
A Defense of Calvinism - by Charles Spurgeon
The Forgotten Spurgeon, by Iain Murray
A Defense of Calvinism - by Charles Spurgeon