Crossword puzzle clue "he wrote a mind that found itself"

He wrote "A Mind That Found Itself"

Times-itself-times-itself

In itself or of itself

French author who said "An intellectual is someone whose mind watches itself"

Poet Carson who wrote "To be running breathlessly, but not yet arrived, is itself delightful, a suspended moment of living hope

Philosopher who wrote "To be sane in a world of madmen is in itself madness"

"___ is an issue of mind over matter.If you don't mind, it doesn't matter." (Mark Twain)

Mind-to-mind messaging, for short