I don't know all the reasons for these achievements, but I know that I love what I do and I have never wanted to rest on my laurels.
Ahmed H. ZewailIf you like, there is a Guinness time. The reason for that it's fundamental. It is not that we have to keep shortening the time. It turns out all molecular and biological systems have speeds of the atoms move inside them, the fastest possible speeds are determined by their molecular vibrations and this speeds is about a kilometre per second.
Ahmed H. Zewail