Charles H. Spurgeon on Psalms 101:2

I will behave myself wisely. The first thing he vows touching himself, is wise behaviour; prudence, not sapience; not wise contemplation, but wise action. It is not wise thoughts, or wise speaking, or wise writing, or wise gesture and countenance, will serve the turn, but wise behaviour: the former are graceful, but the other needful. For as the apostle saith of godliness, "Having a show of godliness, but denying the power thereof"; so certainly there are those who in point of wisdom and sufficiency that do little or nothing thoroughly, but magno conatu nugas, they make much ado about small matters; using all the perspectives of shifting they can devise to make an empty superficies seem a body that hath depth and bulk. —George Hakewill.