Evil being the root of mystery, pain is the root of knowledge.
A doctrine serves no purpose in itself, but it is indispensable to have one if only to avoid being deceived by false doctrines.
The only great spirit of our time.
Only an indirect method is effective. We do nothing if we have not first drawn back.
A test of what is real is that it is hard and rough. Joys are found in it, not pleasure. What is pleasant belongs to dreams.
[We are not] to take one step, even in the direction of what is good, beyond that to which we are irresistibly impelled by God, and this applies to action, word, and thought.