Behind every great man is a great woman, so the saying goes.

And in Jeff Bezos' case that woman was his mother Jacklyn Bezos, who died peacefully at her home this week at the age of 78.

Today, her son is one of the world's wealthiest men, but his beginnings were a lot more humble.

It is largely thanks to the tireless sacrifice of his mother that he is able to sit atop his Amazon empire.

It is a sentiment not lost on the billionaire CEO, who acknowledged Jacklyn's monumental place in his life in an emotional post announcing her death.