London: Director Steven Spielberg says he is motivated to tackle projects that scare him.
The 64-year-old said he likes to take on projects which intimidate him, and he is always nervous when he is on the set of a new movie, reported Contactmusic.
"Fear is what drives me. Every movie is scary for me and every day I shoot the movie is scary. And I need fear because it drives me to explore things. It keeps me looking for a new variation on constant themes," Spielberg said.
Talking about his upcoming film `War Horse`, Spielberg said he finds the animals most intelligent.
"I`d never made a movie where a horse was the star. Or, indeed, any animal was the star. My daughter, who is 14, is a competitive jumper. And my wife just started doing dressage.
"So I`ve been living with horses for the past eight years, and they`ve been part of my life for the past 16 to 17 years. Based on directing a movie with horses, I now feel very strongly that they`re the most intelligent animals I`ve ever come across."