Spiritually, a man's thoughts must be the building in which he lives, otherwise it's wrong. - Søren Kierkegaard

And 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, neither by diversion nor by noise, neither at work nor at play, neither by day nor at night.

To one unnamed, whose name will one day be named, is dedicated, with this little work, the entire authorship, as it was from the beginning. (Dedication) P. 163

For I have trained myself and am training myself always to be able to dance lightly in the service of thought