自4月12日英國(guó)著名理論物理學(xué)家史蒂芬·霍金開(kāi)通個(gè)人微博后，得到了廣大網(wǎng)友的積極支持和響應(yīng)。截至4月28日，微博粉絲數(shù)已突破350萬(wàn)人。大家紛紛留言，向他提出許多有趣的問(wèn)題。

　　今天上午，針對(duì)其中一位網(wǎng)友的問(wèn)題，霍金特意發(fā)微博回答了這位網(wǎng)友的提問(wèn)。

　　微博原文如下：

　　謝謝你們大家留下的出彩的評(píng)論和問(wèn)題！我很感激通過(guò)這樣的機(jī)會(huì)和微博上的朋友們交流。

　　評(píng)論里的一個(gè)問(wèn)題：

　　“中國(guó)古代有個(gè)哲學(xué)家叫莊子。'昔者莊周夢(mèng)為蝴蝶'，夢(mèng)醒后，莊周不知是他夢(mèng)為蝴蝶，還是蝴蝶夢(mèng)為莊周。霍金教授，請(qǐng)問(wèn)我們?nèi)绾沃牢覀兪巧钤趬?mèng)里還是真實(shí)存在？”

　　謝謝你的問(wèn)題！莊周夢(mèng)蝶 ——也許是因?yàn)樗莻€(gè)熱愛(ài)自由的人。換做我的話，我也許會(huì)夢(mèng)到宇宙，然后困惑是否宇宙也夢(mèng)到了我。來(lái)回答你的問(wèn)題：“我們?nèi)绾沃牢覀兪巧钤趬?mèng)里還是真實(shí)存在？” —— well, 我們不知道，也許也無(wú)法知道！這個(gè)問(wèn)題至少要等到我們開(kāi)始深刻地了解意識(shí)和宇宙時(shí)才可知。我們必須要孜孜不倦地探索關(guān)于存在的基本命題，只有這樣，我們也許才會(huì)知道蝴蝶(或宇宙)是真實(shí)存在，還是只存在于我們的夢(mèng)里。

　　- SH

　　Thank you for all of your fascinating comments and questions! I appreciate the opportunity to correspond with my friends on Weibo。

　　A question from the comments:

　　"There is a story about an ancient Chinese philosopher, Zhuangzi. Zhuangzi dreamt of becoming a butterfly. And he wondered if he was a man who dreamt of being a butterfly or a butterfly that dreamt of being a man. Prof. Hawking, how do we know if we are living in our dreams or reality?”

　　Thank you for your question! Zhuangzi dreamt of being a butterfly - perhaps because he was a man who loved freedom. I might dream of the universe and then wonder if the universe dreamt of me. To answer your question how do we know if we are living in our dreams or reality - well, we just don't and perhaps can't! At least not until we start to understand more about consciousness and the universe. We must keep striving for an understanding of the fundamental questions of existence. And then perhaps we will know whether the butterfly - and the universe - are real or just in our dreams. -SH