Well, some mathematics problems look simple, and you try them for a year or so, and then you try them for a hundred years, and it turns out that they're extremely hard to solve. ↗
It's extremely hard to build a company with a product that everyone loves, is free and has no business model, and then to innovate a business model. I did that with Kazaa, had half a billion downloads but that wasn't a sustainable business. ↗
Beauty is composed of an eternal, invariable element whose quantity is extremely difficult to determine, and a relative element which might be, either by turns or all at once, period, fashion, moral, passion. ↗
The study of consciousness that can extend beyond the body is extremely important for the issue of survival, since it is this part of human personality that would be likely to survive death. ↗
I think the reason why we were able to actually get it made was that we were so extremely naive - we had no experience at all here. We didn't even know that you were supposed to have an agent. We didn't even have a lawyer. We didn't know one soul. ↗