I guess we're all, or most of us, the wards of that nineteenth-century science which denied existence to anything it could not measure or explain. The things we couldn't explain went right on but surely not with our blessing. We did not see what we couldn't explain, and meanwhile a great part of the world was abandoned to children, insane people, fools, and mystics, who were more interested in what is than in why it is. So many old and lovely things are stored in the world's attic, because we don't want them around us and we don't dare throw them out.

The book is very different in tone from Steinbeck's amoral and ecological stance in earlier works like Tortilla Flat and Cannery Row. The story is about two traveling ranch workers George and Lennie trying to work up enough money to buy their own farm/ranch. Soon after he began work on East of Eden (1952) which he considered his best work.

John Ernst Steinbeck Jr. (February 27 1902 – December 20 1968) was an American writer. As the author of twenty-seven books including sixteen novels six non-fiction books and five collections of short stories Steinbeck received the Nobel Prize for Literature in 1962.