Great mind. Greater mystery.

Today, Professor Stephen Hawking, one of the greatest minds of our time, turns 70. And what an incredible 70 years it has been.

Professor Hawking has shed light on some of the universe’s most baffling secrets – ranging from the nature of space-time to black holes.

But in an interview to mark his birthday, the Professor confessed that he still struggles with one age-old riddle: “Women. They are a complete mystery.”

Is it at all surprising that when it comes to the female mind, the Professor is a freshman like the rest of us?

Happy birthday, Mister!