Dr Kaku is a vocal proponent of String Field Theory, a complex field of physics that many believe is a solid contender for a Theory of Everything.
He explores the topic in his new book, The God Equation, and has explained how Einstein’s pursuit of knowledge inspired him to become a physicist himself.
The futurist appeared on PBS’s NewsHour Weekend, where he discussed his new book and why String Theory could unlock the secret of the Universe.
Speaking to Mori Rothman, he said: “When I was eight years old, something happened which totally changed my entire life.
“A great scientist had just died and the newspapers all published a picture of his desk with an open book.
“And the caption said, this is the unfinished manuscript of the greatest scientists of our time.”