My kid sister is a real mouth; she never shuts up.

We have thus, instead of a monument erected on the hearth of Russian tradition and feeling, numberless single stones, some of which, beautifully carved, — but in crooked lines, — lead us to Bagdad, China, and wherenot.

If an observable can be described by a Hermitian matrix H, then for a given state ⟨A⟩, the expectation value of the observable for that state is ⟨A|H|A⟩.

I wanted to give Debbie all the details of the weekend so she knew I hadn't hung around the bar drinking coladas the entire time.