Hello. You did not enter the text to which this question refers, which makes it impossible for your question to be answered in a specific way. However, I will try to help you, in the best possible way, showing you how to paraphrase.
In summary to paraphrase Tolstoy's quote, you will have to rewrite that quote using different words, but keeping the same meaning as the original quote. For that, you must be the quote and rewrite it without changing the original meaning.