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What do I care about the purring of one who cannot love, like the cat?

With regard to philosophical metaphysics, I always see increasing numbers who have attained to the negative goal, but as yet few who climb a few rungs backwards; one ought to look out, perhaps, over the last steps of the ladder, but not try to stand upon them.

[Heraclitus] did not require humans or their sort of knowledge, since everything into which one may inquire he despises [as being] in contrast [to his own] inward-turning wisdom. [To him] all learning from others is a sign of nonwisdom, because the wise man focuses his vision on his own intelligence.

A joke is an epigram on the death of a feeling.

To be the equal of one's opponent-this is the first condition of an honourable duel.

The discipline of suffering, of great suffering - do you not know that it is this discipline alone that has produced all the elevations of humanity so far?