Can I cast a Ritual spell that’s in my spell book, but not prepared?

@Hurmly @Starstuff84 Can I cast a Ritual spell that's in my spell book, but not prepared?

— John Appleton (@jaa0109) May 19, 2017

The wizard's Ritual Casting feature says you don't need to have a ritual prepared to cast it from your spellbook (PH, 114). #DnD https://t.co/bajncgPahJ

— Jeremy Crawford (@JeremyECrawford) May 20, 2017