He has been teaching for 38 years and has been at the school for six

In the 19th century the letter was deemed obscene and not published

the letter 'Advice to a Young Man on Choosing a Mistress he wrote in 1745' - telling a man how to choose an older woman companion

An Oklahoma history teacher faces losing his job for having a Benjamin Frankiln poster with a controversial quote based on 'choosing a mistress' on the wall of his classroom.

Steven Alcorn, 62, who has taught for 38 years, was suspended from Marlow High School last week for having a picture of a cat alongside the phrase: 'In the dark, all cats are grey.'

It is paraphrasing a letter the Founding Father wrote to a friend in 1745 called 'Advice toa Young Man on Choosing a Mistress' - urging a man he should chose an older woman companion.

Steven Alcorn was suspended from Marlow High School in Oklahoma last week for having a picture of a cat alongside the phrase 'In the dark, all cats are grey' in the classroom. It is a quote from a letter by Benjamin Franklin (right), written in 1745, advising a young man that he should choose an older mistress

In the passage, the politician writes: 'It is impossible of two women to know an old from a young one. And as in the dark all Cats are grey, the pleasure of corporal enjoyment with an old Woman is at least equal, and frequently superior.'

In the 19th century it was deemed obscene and was not