一次就好吉他谱纵玩:翻译一句话

关于人们保守秘密，现实和小说中在哪方面不同？

"Nothing can come of nothing"是沙翁名剧<King Lear (李尔王)>里的句子
Old King Lear has decided to retire and divide his kingdom among his three daughters. They are required to come forward and flatter him. His two eldest daughters, Regan and Goneril, flatter and deceive the old king, and receive their rewards. The youngest, Cordelia, who loves him most, cannot find the words to articulate this love. He asks her to speak up and praise him more than her sisters have just done. When asked 'what do you have to say?' Cordelia responds "Nothing." He repeats this answer as a question. She responds the same. Lear is outraged and tells her that "nothing will come of nothing," and banishes her without money, title, or any part of his kingdom.
这句话的原意是: "没有就意味着一无所有".但现在这话已演变成: "事出有因", "无风不起浪",或者"事有其本,物有其源"

在什么方面事实与小说不同关于人们保留对他们自己的秘密?