— Robert M. Pirsig, Zen and the Art of Motorcycle Maintenance: An Inquiry Into Values
Context: A single thought begins to grow in his mind, extracted from something he read in the dialogue Phædrus. "And what is written well and what is written badly—need we ask Lysias, or any other poet or orator, who ever wrote or will write either a political or any other work, in metre or out of metre, poet or prose writer, to teach us this?"
What is good, Phædrus, and what is not good—need we ask anyone to tell us these things?
The quote is from section 258d of the dialogue Phædrus (tr. Benjamin Jowett).