When the discoveries of possibility are honestly administered, possibility will discover all finitudes but idealize them in the shape of infinity, in anxiety overwhelm the individual, until the individual again overcomes them in the anticipation of faith.

Anxiety is freedom’s possibility; this anxiety alone is, through faith, absolutely formative, since it consumes all finite ends, discovers all their deceptions.

Faith is a marvel, and yet no human being is excluded from it; for that in which all human life is united is passion, and faith is a passion.

Sitting calmly on a ship in fair weather is not a metaphor for having faith; but when the ship has sprung a leak, then enthusiastically to keep the ship afloat by pumping and not to seek the harbor--that is the metaphor for having faith. (Concluding Unscientific Postscript)

to have faith is precisely to lose one's mind so as to win God.