Thinking and spoken discourse are the same thing, except that what we call thinking is, precisely, the inward dialogue carried on by the mind with itself without spoken sound.
PlatoSeven years of silent inquiry are needful for a man to learn the truth, but fourteen in order to learn how to make it known to his fellow-men.
PlatoThe soul takes flight to the world that is invisible but there arriving she is sure of bliss and forever dwells in paradise.
Plato