Robert Langdon: This is the original icon for male. It's a rudimentary phallus.
Sophie Neveu: Quite to the point.
Sir Leigh Teabing: Yes, indeed.
Robert Langdon: This is know as the blade. It represents aggression and manhood. It's a symbol still used today in modern military uniforms.
Sir Leigh Teabing: Yes, the more penises you have, the higher your rank. Boys will be boys.
Robert Langdon: There was every orb conceivable on that tomb except one. The orb which fell from the heavens and inspired Newton's life's work. Work that incurred the wrath of the Church... until his dying day. A-P-P-L-E. Apple.