David Brainerd was an American missionary to the Native Americans who had a particularly fruitful ministry among the Delaware Indians of New Jersey. During his short life he was beset by many difficulties. As a result, his biography has become a source of inspiration and encouragement to many Christians, including missionaries such as William Carey and Jim Elliot, and Brainerd's cousin, the Second Great Awakening evangelist James Brainerd Taylor.
I fear God never showed mercy to one so vile as I.
If you hope for happiness in the world, hope for it from God, and not from the world.
I have a secret thought from some things I have observed, that God may perhaps design you for some singular service in the world.