Conversations are what happen when expressions of our own thoughts meet those of another.
A twist is added when we quote someone else. The conversation suddenly takes on another dimension as the knowledge base, experience, fame, oratory, writing skill, or reasoning of someone entirely outside of the conversation joins in.
Very rarely is the person being quoted present, nor is the quoted likely to have granted permission to be quoted. Nevertheless, the quote is plucked from its origin and placed, sometimes gently, sometimes severely, into an entirely new home.
Quotes cannot, and should not, be divorced from their context.... after all, context is what makes puns even more meaningful. : )