I told him I had read his book and that I'm an aspiring entrepreneur, and so he proceeded to give me some advice, saying: "the right time to start a new venture is now", "go out and just do it". As we parted ways he tapped me on the shoulder and said, "go and do it, when you leave this shop go and register your business right now and start it. Don't delay. The right time is now."
Edit: I was just reminded that although he was filthy rich (as he described himself), he was also frugal in some ways and always after a deal. When we met, he mentioned that he had been wearing his suit for 20 years, but it no longer fit due to his illness, and so if I recall correctly, he bought at least 3 new suits from the tailor on that day. He would walk also around Central London, with his offices in Soho, and as of 2012 did not own a mobile phone.