@BeatsMeWhy,
draomas
anabasis, perpetual retreat
aspiration
being autochthonous [look it up]
conceptual technique
confronting problems with concepts
consciousness of problems
contemplating things as beings
deepening and [then] making patent
denuding things
drinking essences
enthusiasm
essential suspicion
inquiring about being
intellectual radicalism
interpretation of life
interpretation of reality
logical thinking preceded by other [thoughts]
man alert
meditation on life
natatory effort
obtaining security by [means of] clarity
over-living
paradoxa
proper thinking
saying being
searching for the integrity of the world
searching for the plain truth
seeing all sides of things
seriousness
solitude/loneliness
something that man does
specializing in the universe
the Great Game
the island of the dead
the question[ing] of the universe
the science of doing
the science of possibilities
the science of the feeling of conscious life
the specialty of ignorance
the technique of conceptual precision
the technique of purification
the theory of problems
the tradition of un-tradition
theoretical knowledge
theory
and my favorite,
youth flourishing in old age.
And, oh yes, he wrote a book about it:
What is Philosophy? (Norton, 1961).