I believe he may have been conceived by the midichlorians.
Read more Qui-Gon Jinn QuotesFrom: Star Wars: Episode I - The Phantom Menace
The council has granted me permission to train you. You will be a Jedi, I promise.
The boy is dangerous. They all sense it, why can't you?
You and the Naboo form a symbiont circle, what happens to one of you affects the other, you must understand this.