Luck, talent, and bravery: Three traits that continually emerge in some of Roald Dahl's most famous novels. Classics like Matilda, The BFG, and Charlie and the Chocolate Factory have inspired readers around the world. Among them was billionaire entrepreneur Richard Branson, to whom Dahl (who would have turned 100 years old Monday) also became "a great friend."

In a blog post, the Virgin CEO listed some of his favorite quotes, five of which highlight elements of entrepreneurship.

1. On the importance of vision: "Well, maybe it started that way. As a dream, but doesn't everything? Those buildings. These lights. This whole city. Somebody had to dream about it first." - James and the Giant Peach

2. On going against the grain: "It is most unlikely. But - here comes the big 'but' - not impossible." - The Witches

3. On trusting your instincts: "I understand what you're saying, and your comments are valuable, but I'm gonna ignore your advice." - Fantastic Mr Fox

4. On using your influence: "Having power is not nearly as important as what you choose to do with it." - Matilda

5. On opportunity: "However small the chance might be of striking lucky, the chance was there." - Charlie and the Chocolate Factory

To celebrate the author, Branson tweeted a toast on Tuesday:

Meanwhile, for Dahl's centenary birthday the Oxford English Dictionary added some of the best-known words coined in his novels, or that his writings popularized.

Dahlesque: dark humor, evil character, or eccentric plots

Golden Ticket: a valuable prize

Human Bean: The BFG's mispronunciation of 'human being'

Oompa Loompa: Willy Wonka's factory workers

Scrumdiddlyumptious: delicious (popularized in the BFG)

Witching hour: "the dead of night," a term that first appeared in Shakespeare's Hamlet but was later used by Dahl in The BFG as "a special moment in the middle of the night when every child and every grown-up was in a deep deep sleep, and all the dark things came out from hiding and had the world to themselves."