But the Hebrew word, the word timshel—‘Thou mayest’— that gives a choice. It might be the most important word in the world. That says the way is open. That throws it right back on a man. For if ‘Thou mayest’—it is also true that ‘Thou mayest not.

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.