Anamnesis

anamnesis: calling to memory past matters; more specifically, citing a past author from memory (so as to establish the writer's or speaker's credibility.

http://humanities.byu.edu/rhetoric/silva.htm

Examples: We who are religious should think twice before disparaging science, for in many ways their work is a work of great faith. As Albert Einstein once said, "the serious scientific workers are the only profoundly religious people."

Was it not Socrates who said the unexamined life is not worth living?