Forum:Can Ritual Monsters be summoned from your hand without the Ritual Spell?

There's this friend that I duel who uses a Ritual Deck. He keeps summoning the Ritual Monsters straight from his hand without using the Ritual Spell. I keep telling him he is wrong and that you need to use the Ritual Spell in order to summon the Ritual Monster from your hand and that you can't Normal Summon them. Am I right when I say this?