Just about ANY line of Babylon5 script, especially where Londo Mollari is trying to unravel the hidden philosopy of the humans' Hokey - Cokey song... Or, from Star Wars: Skywalker: 'I don't believe it!' Yoda: 'That.. is why you fail' Trev.
Or, from Star Wars:
Skywalker: 'I don't believe it!' Yoda: 'That.. is why you fail'
Trev.