Friedrich Wilhelm Nietzsche,
The Joyful Wisdom ("La Gaya Scienza"…
“ Cheers for Physics!—How many men are there who know how to observe? And among the few who do know,—how many observe themselves? "Everyone is furthest from himself"—all the "triers of the reins" know that to their discomfort; and the saying, "Know thyself," in the mouth of a God and spoken to man, is almost a mockery. But that the case of self-observation is so desperate, is attested best of all by the manner in which almost everybody talks of the nature of a moral action, that prompt, willing, convinced, loquacious manner, with its look, its smile, and its pleasing eagerness! ”
