A sound mind in a sound body is a short but full description of a happy state in this world.
John LockeEvery man carries about him a touchstone, if he will make use of it, to distinguish substantial gold from superficial glitterings, truth from appearances. And indeed the use and benefit of this touchstone, which is natural reason, is spoiled and lost only by assuming prejudices, overweening presumption, and narrowing our minds.
John LockeThe reservedness and distance that fathers keep, often deprive their sons of that refuge which would be of more advantage to them than an hundred rebukes or chidings.
John Locke