“Never could I interest myself in a book if it were not the exact diet my mind required at the time, or in the very immediate future. The mind asked, received, and digested. So much was assimilated, so much expelled; then, after a season, similar demands were made, the same processes were repeated out of sight, below consciousness, as is the case in a well-ordered stomach.”
Source: Confessions of a Young Man http://www.gutenberg.org/files/12278/12278-h/12278-h.htm (1886), Ch. 2.
Help us to complete the source, original and additional information
George Moore (novelist) 33
Irish novelist, short-story writer, poet, art critic, memoi… 1852–1933Related quotes
As quoted in [Man, Chella, What It’s Like to Be Trans and Live With Gender Dysphoria, https://www.teenvogue.com/story/what-its-like-to-be-trans-and-live-with-gender-dysphoria, 29 January 2019, Teen Vogue, September 21, 2018]

“I should not talk so much about myself if there were anybody else whom I knew as well.”
Source: Walden: Or, Life in the Woods

Original quote:
For my friend said that he opened his intellect as the sun opens the fans of a palm tree, opening for opening's sake, opening infinitely for ever. But I said that I opened my intellect as I opened my mouth, in order to shut it again on something solid. I was doing it at the moment. And as I truly pointed out, it would look uncommonly silly if I went on opening my mouth infinitely, for ever and ever.
The Extraordinary Cabman, one of many essays collected in Tremendous Trifles (1909)
Misattributed

INTERVIEW WITH AMANDA WYSS OF ‘A NIGHTMARE ON ELM STREET’ & ‘THE ID’ http://horrorgeeklife.com/2016/11/10/interview-amanda-wyss/ (November 10, 2016)