Belief in truth begins with doubting all that has hitherto been believed to be true.

One's belief in truth begins with doubt of all truths one has believed hitherto

Truth is a mobile army of metaphors, metonyms, anthropomorphisms, in short a sum of human relations which have been subjected to poetic and rhetorical intensification, translation and decoration […]; truths are illusions of which we have forgotten that they are illusions, metaphors which have become worn by frequent use and have lost all sensuous vigour […]. Yet we still do not know where the drive to truth comes from, for so far we have only heard about the obligation to be truthful which society imposes in order to exist"


from, "On Truth and Lying in a Non-Moral Sense".

Nobody talks more passionately of his rights than he who, in the depths of his soul, is doubtful about them.

One can promise actions, but not feelings, for the latter are involuntary. He who promises to love forever or hate forever or be forever faithful to someone is promising something that is not in his power.

'Faith' means not wanting to know what is true