In our time mass or collective production has entered our economics, our politics, even our religion, so that some nations have substituted the idea collective for the idea God. This in my time is the danger. There is great tension in the world, tension toward a breaking point, and men are unhappy and confused. At such a time it seems natural and good to me to ask myself these questions. What do I believe in? What must I fight for and what must I fight against?

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.