The unthankful heart discovers no...

The unthankful heart discovers no mercies; but the thankful heart will find, in every hour, some heavenly blessings.

Full, original quote

If any one should give me a dish of sand, and say that there are particles of iron in it, I might look with my eyes for them, and search for them with my fingers and be unable to find them, but let me take a magnet and sweep it, and how it would draw to itself the most invisible particles by the mere power of attraction! The unthankful heart, like my finger in the sand, discovers no mercies; but let the thankful heart sweep through the…