"No flower is born to blush unseen, and waste its sweetness; for God sees it and that is enough." (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
You can also listen to an audio recording of The Forgotten Spurgeon on Sermonaudio.com: