Other sciences are suited to the various conditions of life: some, more necessary to some; other, to others. But this [science of self-knowledge] equally concerns every one. A Treatise on Self-Knowledge (1745)
He who does not improve his temper together with his understanding, is not much the better for it. A Treatise on Self-Knowledge (1745)
Every one of a common capacity hath the opportunity and ability to attain [self-knowledge], if he will but recollect his rambling thoughts, turn them in upon himself, watch the motions of his heart. A Treatise on Self-Knowledge (1745)
What a pity it is that ... tutors, both in public and private seminaries of learning, should forget that the forming the manners is more necessary to a finished education than furnishing the minds of youth. A Treatise on Self-Knowledge (1745)