"“Let me give you some counsel, bastard,” Lannister said. “Never
forget what you are, for surely the world will not. Make it your
strength. Then it can never be your weakness. Armor yourself in it, and
it will never be used to hurt you.” Jon was in no mood for anyone’s counsel. “What do you know about being a bastard?” “All dwarfs are bastards in their father’s eyes.” “You are your mother’s trueborn son of Lannister.” “Am I?” the dwarf replied, sardonic. “Do tell my lord father. My mother died birthing me, and he’s never been sure.” “I don’t even know who my mother was,” Jon said. “Some
woman, no doubt. Most of them are.” He favored Jon with a rueful grin.
“Remember this, boy. All dwarfs may be bastards, yet not all bastards
need be dwarfs.”" ― George R.R. Martin, A Game of Thrones