What a wee little part of a person's life are his acts and his words! His real life is led in his head, and is known to none but himself. All day long, the mill of his brain is grinding, and his thoughts, not those of other things, are his history. These are his life, and they are not written. Everyday would make a whole book of 80,000 words -- 365 books a year. Biographies are but the clothes and buttons of the man -- the biography of the man himself cannot be written.
— Mark Twain

My mind seems to have become a kind of machine for grinding general laws out of large collections of facts.
Charles Darwin grinding quote

Oh, the torment bred in the race, the grinding scream of death and the stroke that hits the vein, the hemorrhage none can staunch, the grief, the curse no man can bear. But there is a cure in the house, and not outside it, no, not from others but from them, their bloody strife. We sing to you, dark gods beneath the earth. Now hear, you blissful powers underground -- answer the call, send help. Bless the children, give them triumph now.
— Aeschylus

Creating a family in this turbulent world is an act of faith, a wager that against all odds there will be a future, that love can last, that the heart can triumph against all adversities and even against the grinding wheel of time.
— Dean Koontz

It's no mystery why many of us in the media can't get enough of the fabricators Jayson Blair and Stephen Glass, the latter of whom concocted more than a score of bogus feature stories for the New Republic (and who wrote for other magazines, including this one, once) in the mid-1990s. Anyone--journalist, student, academic--who has ever stared at a blank screen, their brains grinding emptiness, and thought, How can I fill this hole? knows that in those desperate moments before a deadline, almost anyone can do almost anything: make stuff up, plagiarize, scribble senseless half-truths.
— grinding quotation by David Edelstein