When a simple man who has no skill in dialectics believes an argument to be true which he afterwards imagines to be false, whether really false or not, and then another and another, he no longer has any faith left, and great disputers, as you know, come to think, at last that they have grown to be the wisest of mankind; for they alone perceive the utter unsoundness and instability of all arguments, or, indeed, of all things, which like the currents in the Euripus, are going up and down in never-ceasing ebb and flow. The Trials Of Socrates

When one maintains his proper attitude in life, he does not long after externals. Discourses

What is that the inherence of which, will render the body alive? [The soul.] ...Then whatever the soul possesses, to that she comes bearing life? ...And is there an opposite to life? [Death.] Then the soul, as she has been acknowledged, will never receive the opposite of what she brings. ...And what do we call the principle which does not admit of death? [The immortal.] And does the soul admit of death? [No.] Then the soul is immortal? [Yes.] The Trials Of Socrates

How charming it is that there are words and sounds: are not words and sounds rainbows and illusive bridges between things eternally separated? Thus Spoke Zarathustra