Robert Frost was an American poet who is widely regarded as one of the greatest poets of the 20th century. He is known for his realistic depictions of rural life and his use of language to create poetic expressions. He was born in San Francisco in 1874 and died in 1963. He won four Pulitzer Prizes for Poetry and was awarded the Congressional Gold Medal in 1960. His most famous works include 'The Road Not Taken' and 'Stopping by Woods on a Snowy Evening'.