No grand inquisitor has in readiness such terrible tortures as has anxiety and no spy knows how to attack more artfully the man he suspects, choosing the instant when he is weakest; nor knows how to lay traps where he will be caught and ensnared as anxiety knows how, and no sharp-witted judge knows how to interrogate, to examine the accused, as anxiety does, which never lets him escape.
Soren KierkegaardBut doubt is wily and cunning and never, as it is sometimes said to be, loud or defiant. It is unassuming and sly, not bold or assertive - and the more unassuming, the more dangerous.
Soren KierkegaardJust as in earthly life lovers long for the moment when they are able to breathe forth their love for each other, to let their souls blend in a soft whisper, so the mystic longs for the moment when in prayer he can, as it were, creep into God.
Soren KierkegaardKnowledge is an attitude, a passion, actually an illicit attitude. For the compulsion to know is like dipsomania, erotomania, and homicidal mania, in producing a character that is out of balance. It is not at all that the scientist goes after the truth.
Soren Kierkegaard