Why I Love The Word "Heart"

I was inspired by the book Purification of the Heart by Hamza Yusuf ; one of the meaningful gifts I've ever received...

From the book's Acknowledgements:

"On the Day of Judgment no one is safe save the one who returns to God with a pure heart" (Al Quran)

"Surely in the breasts of humanity is a lump of flesh, if sound then the whole body is sound, and if corrupt then the whole body is corrupt. Is it not the heart ? " ( Prophet Muhammad)