(Quotes taken from 7 Ways to Retain More of Every Book You Read by James Clear)
Start more books. Quit most of them. Read the great ones twice.
Beware the man of a single book.
Thomas Aquinas
Life is too short to not read the very best book you know of right now.
Patrick Collison
Anything worth reading is not only worth reading twice, but worth reading again and again. If a book is worthwhile, then you will always be able to make new discoveries in it and find things in it that you didn’t notice before, even though you have read it many times.
Karl Popper
A good book gets better at the second reading. A great book at the third. Any book not worth rereading isn’t worth reading.
Nassim Taleb