3248. I reasoned variously concerning the bird, [as to] what it signifies: but my reasoning ended in this, that it is not yet discovered what it signifies, only [that it signifies] the inhabitants of Mars, because I hear and perceive them, to deny it: still such representation cannot exist, apart from the society of angels, which it represents: for it is plain, that bird signifies thought. - 1748, September 22.