Words of wisdom from Paris Hilton are to be immortalized alongside remarks by some of the greatest thinkers of all time in the latest edition of the Oxford Book of Quotations -- and she reckons it's so cool.

Hilton, the socialite turned reality TV star and retailing phenomenon, is listed in the latest version of the 65-year-old dictionary, released this week, alongside the likes of Confucius, Oscar Wilde and Stephen Hawking.

Her contribution? Dress cute wherever you go, life is too short to blend in.

Hilton, 28, was delighted to be featured in the book, which is a renowned list of memorable sayings.

So cool that I have a quote in the dictionary, she wrote on her Twitter page.

Another new entry in the seventh edition of the Oxford University Press publication is Sarah Palin.

The former vice-presidential candidate makes the cut for her most famous quip: What's the difference between a hockey mom and a pitbull? Lipstick.

More than 20,000 new quotations have been added to the dictionary, including one credited to President Barack Obama that echoes words spoken by Martin Luther King Jr.: The arc of history is long, but it bends toward justice.

Others came from the likes of British author Terry Pratchett -- using embuggerance to describe his Alzheimer's -- and from author Fay Weldon: Guilt is to motherhood as grapes are to wine.