Date: 1949

"The mind is its own place and in his inner life each of us lives the life of a ghostly Robinson Crusoe."

— Ryle, Gilbert (1900-1976)

Date: 1971, 1979

"Thinking is trying to better one's instructions; it is trying out promissory tracks which will exist, if they ever do exist, only after one has stumbled exploringly over ground where they are not."

— Ryle, Gilbert (1900-1976)

Date: 2006

"When there is no longer any wobble, then the mind is like an unwavering rock, more immovable than a mountain and harder than a diamond."

— Ajahn Brahm [born Peter Betts] (August 7, 1951)

Date: July 21, 2014

"Perhaps because Harry's life, on the page and, even more luridly, onscreen, was measured out in highlights, as the plot demanded, whereas Mason is revealed in a string of lowlights, or in those episodes which seem dim and dull at the time, and only later shine in memory's cave."

— Lane, Anthony (b. 1962)