QuoteWhat mystery do you find most intriguing, and why? HAWKING: Women. My PA reminds me that although I have a PhD in physics, women should remain a mystery.
http://www.independent.co.uk/news/science/stephen-hawking-says-women-are-the-most-intriguing-mystery-in-reddit-ama-a6687246.html
https://www.reddit.com/r/science/comments/3nyn5i/science_ama_series_stephen_hawking_ama_answers/?limit=500