Almost all the exams I have ever given included a "Food for Thought" section which included one or two quotations which were either somewhat related to the topics the exam covered or even contained a hint or two (however oblique) to correctly answering some of the questions.
Here are a couple from my Stats exams:
The government are very keen on amassing statistics. They collect them, add them, raise them to the nth power, take the cube root and prepare wonderful diagrams. But you must never forget that every one of these figures comes in the first instance from the village watchman, who just puts down what he damn pleases.
Anonymous English Judge
Quoted by Sir Josiah Stamp in Some Economic Matters in Modern Life (1929)
I've gone to hundreds of fortune-tellers’ parlors, and have been told thousands of things, but nobody ever told me I was a policewoman getting ready to arrest her.
Anonymous New York City Detective