Nicolai

“What, if some day or night a demon were to steal after you into your loneliest loneliness and say to you: 'This life as you now live it and have lived it, you will have to live once more and innumerable times more' ... Would you not throw yourself down and gnash your teeth and curse the demon who spoke thus? Or have you once experienced a tremendous moment when you would have answered him: 'You are a god and never have I heard anything more divine.”
― Friedrich Nietzsche, The Gay Science: With a Prelude in Rhymes and an Appendix of Songs

“The only thing I know is that I know nothing, and i am no quite sure that i know that.”
― Socrates, Essential Thinkers - Socrates

“That which can be asserted without evidence, can be dismissed without evidence.”
― Christopher Hitchens

“Appear weak when you are strong, and strong when you are weak.”
― Sun Tzu, The Art of War