He put it within the human breast. That is why humankind has always been drawn to a belief in God. Realize that God has planted faith within the instinct of every healthy human being. However, just as animals lose some of their innate drives when taken from their natural habitats, so man loses his innate ability to believe in a loving God when he is away too long from positive, faith-producing environments. That is why it is so important to carefully surround ourselves with positive, believing, healthy people.
Faith is a sign of health.
Skepticism is a mark of illness. Unbelief is abnormal, belief is normal. And, THAT kind of loving is eternal - everything else is temporary, no matter where you are.