I am currently sourcing some ideas from a few books (through Google Books) and I sometimes stumble upon introductory messages from the authors/editors of these books saying something like:
"All rights reserved. No part of this book may be reprinted or reproduced or utilised in any form or by an electronic, mechanical, or other means, now known or hereafter invented, including photocopying and recording, or in any information storage or retrieval system, without permission in writing from the publishers" (https://books.google.com/books?isbn=1317622006)
and similar messages... so, does that mean that I cannot paraphrase or quote from it under fair use? (Sometimes I do read other messages explicitly allowing fair use)