This is a quote from Harry Potter and Sorcerer's Stone by Albus Dumbledore. I am currently rereading the series in celebration of the first part of Deathly Hallows in the fall, and this quote jumped out at me immediately.
I've loved Harry Potter since I was 8 years old and have planned on getting a related tattoo for quite some time. I think this is perfect.
I'll be getting it horizontally along my right rib cage.