Keegan

“A kernel of truth lurks at the heart of religion, because spiritual experience, ethical behavior, and strong communities are essential for human happiness. And yet our religious traditions are intellectually defunct and politically ruinous. While spiritual experience is clearly a natural propensity of the human mind, we need not believe anything on insufficient evidence to actualize it.”
― Sam Harris

“A written word is the choicest of relics. It is something at once more intimate with us and more universal than any other work of art. It is the work of art nearest to life itself. It may be translated into every language, and not only be read but actually breathed from all human lips; -- not be represented on canvas or in marble only, but be carved out of the breath of life itself.”
― Henry David Thoreau, Walden or, Life in the Woods

“Therefore I beg you, reader, not to rejoice too greatly if you have read much, but if you have understood much. Nor that you have understood much, but that you have been able to retain it. Otherwise it is of little profit either to read or to understand.”
― Hugh of Saint Victor, The Didascalicon of Hugh of Saint Victor: A Medieval Guide to the Arts

“At last I will devote myself sincerely and without reservation to the general demolition of my opinions.”
― Rene Descartes, Discourse on Method