The great virtue of expressing propositions in the clearest possible terms is that it helps to expose in all their nakedness both the errors and the truths thus stated. When a philosopher enters a public forum and elucidates the controversial issues in politics, economics, or ethics, he helps both sides to see what is sound and what is weak in their positions. Thus he helps them more truly than by taking sides himself.
-- Notebooks Category 20: What Is Philosophy? > Chapter 1: Toward Defining Philosophy > # 279