DO every BOOK need to b read ''ENTIRELY''?

Its is so easy to feel compelled to finish every book u start.the book i took out from my shelve ..it then becomes my duty to complete it entirely.otherwise a great sense of guilt fills my mind if i do not reach the end of dat book .
but gradually i realized dat not every book deserves to be read in it entirety. i here remembr one quote:,'' some books r to b tasted, some to be swallowd, n some few to be chewd n othe digested. it just means dat some books are to b read partly,other to be read but not curiously and some few books to be read wholly n with diligence n attension.

i myself used to feel so guilty of feeling the need to read every book from beginning to end. but i soon found it not only made my reading unmanagable but i also begaN to enjoy the pastym of reading less. and then i decided i wud be more selective bout the books i read.i mean if i find that after reading first 3 chapters of a book ;i din gained any worthwhile informmation i put dat book away n make bettr use of my tym reading the next book in my piles