The reading of books, and the writing of books, despite current prognostications, appear to have plenty of life in them, and as long as the writing of books continue there will be a need for those silent sentinels, bookmarks to "mark a place.  ― Frank X. Roberts, Ph.D., Essays on Bookmarks and Related Topics.
Why pay a dollar for a bookmark? Why not use the dollar for a bookmark? ― Steven Spielberg
I just got out of the hospital. I was in a speed-reading accident. I hit a bookmark. ― Steve Wright
When I graduated high school, I was one of many English-majors-to-be traveling through Europe with a copy of 'Let's Go Europe' in one hand, 'Anna Karenina' in the other, and a Eurail pass for a bookmark.  ​― Maria Semple
I have this bookmark with glued-on macaroni. I made it in the fourth grade while in detention for giving a girl a tattoo using two rocks rubbed together and a stick. 
​― Jeannie Mai
Don't time travel into the past, roaming through the nuances as if they can change. Don't bookmark pages you've already read.  ―James Altucher
My quest for cosmic understanding is a book I have picked up and put down many times, always forgetting to insert a bookmark.   ― Robert Brault
Throw out those crumpled receipts, old card catalog cards, and ripped up parking tickets and get yourself some real bookmarks. ― Robin K. Blum
I love bookshelves, and stacks of books, spines, typography, and the feel of pages between my fingertips. 
I love bookmarks, and old bindings, and stars in margins next to beautiful passages.  ― Laini Taylor
Accidentally moving someone’s bookmark is like realizing you gave bad directions and not telling them. 
― Nanette L. Avery
As well as being a functional tool, a bookmark denotes human effort as decisively as a flagstaff planted on Everest. The sliver of paper silently congratulates the conqueror of a world of letters.  Deep in a story, suddenly you turn a page and find the marker nagging at your curiosity, like a message in a bottle from a forgotten traveller. ― Nancy Campbell, Thoughts from the Cornfields (blog)
And you read your Emily Dickinson, 
And I my Robert Frost. 
And we note our place with bookmarkers
That measure what weve lost. 
― Paul Simon, The Dangling Conversation, Parsley, Sage, Rosemary, and Thyme  (Simon & Garfunkle)
She read her way around the library, hungry for journeys, adventures, laughter and passion. She took each new book to bed like a lover, savouring every chapter, going too far some nights until the letters danced like insects and she was groggy next day at work. But still she'd sneak away for lunchtime trysts, her eager fingers fumbling for the bookmark. ― Cath Staincliffe.
My weekends are oases of time and space, where I am able to draw a breath and dive into the stuff I couldn't get to that week - the great article I bookmarked, the friend whose emails I kept dropping, the blog post I'd meant to write on a subject that wasn't timely but was still important. ― Rachel Sklar
I love getting things done. That's why I spend several hours a day reading productivity articles. And when the day is done, I bookmark the ones I didn't get to for later. I learned that trick in a productivity article. ― Sarah Cooper
It becomes clear quickly, especially when looking at the home-made bookmarks that there is an intensive and yet largely unexplored relation of the human being to the bookmark.  The bookmark changed in the course of time from the mere text marker to a carrier of communication; from a marker for reading it turned into a mark which can be read for itself.― Heidemarie Fischer-Kesselmann
Sometimes a bookmark can bring a smile, sometimes cause a pause for thought but it nearly always sparks off a memory and apart from a postcard or a photograph there is not many things that have the power to do that.  
― Simon Quicke, The Love of Bookmarks, insidebooks.blogspot.com
Problems of a Book Nerd #917:  Losing your bookmark in your sheets while reading in bed. ― problemsofabooknerd.tumblr.com
History left behind is like a bookmark in a classic. 
― Nanette L. Avery
A bookmark is usable and a piece of art, therefore it is functional art.  ―Katy Cox and Sue Uhlig ― Perdue University Galleries
Culture is not only passed on orally or by instinctive imitation, but above all through reading and study, hence also through the assistance of such a small object as a bookmark.  ―Marco Ferreri, Bookmarks