Exchanged in example sentence
Organisms, their destruction, the indestructibility of matter, the law of the conservation of energy, development – the terms that had superseded these beliefs – were very useful for mental purposes; but they gave no guidance for life, and Levin suddenly felt like a person who has exchanged a thick fur coat for a muslin garment and who, being out in the frost for the first time, becomes clearly convinced, not by arguments, but with the whole of his being, that he is as good as naked and that he must inevitably perish miserably.