You and Your Forces or the Constitution of Man  by Elizabeth Towne 

Can you “become as a little child”? Can you, for the time being, lay aside all your preconceived opinions? Can you let go all the authorities — theologians, scientists, relatives and friends alike — upon whom you have been, perhaps unconsciously, leaning? Can you leave all these and give these lessons your undivided attention? Only so will you be materially enlightened by what you read, whether it be these lessons or some other book.