Albert Einstein. Picture: AP

In public they were upstanding members of society, but behind closed doors some of the greatest men in history succumbed to their somewhat questionable desires.

Albert Einstein

In a 1953 letter to a friend upset about her cheating spouse, Einstein wrote about monogamy: “I am sure you know that most men (as well as quite a number of women) are not monogamously endowed by nature,” National Geographic reported.

“Nature will come through even stronger if convention and circumstances are putting resistances in the way”

He cheated on both of his wives with at least 10 different women, say historians.

Jean-Jacques Rousseau

The French philosopher spoke of his sexual habits in his book, Confessions.

“I sought out dark alleyways and hidden corners, where I could expose myself at a distance to persons of the opposite sex,” he wrote.

James Joyce

In letters to his wife Nora, Irish novelist James Joyce speaks about his affinity for flatulence: “I think I would know Nora’s fart anywhere,” Joyce related. “I think I could pick hers out in a roomful of farting women.” Marchelle Abrahams