An attempt has been made to glimpse at the major themes of Robert Frost’s poems. Frost is a modern American poet of the twentieth century whose poems are furnished with variegated themes. He is a poet who typifies the country’s traditional cultural inheritance. He has absorbed the essence what constitutes America. He is also called the ‘voice of America’ ; so to say, he has represented the faith, doubt, joys, sorrows, emotions, thoughts and ideas of the people of America. He is a poet of man whose poems deal with Man in relation with the universe crossing the border of America. Frost sees that man’s environment is quite indifferent to man. To him, nature is neither absolutely benevolent to man nor hostile always. He regards nature as a beautiful but dangerous force, worthy of admiration, nonetheless fraught with peril. Thus man is essentially alone. A barrier is made between man and his immediate environment, between man and the universe, between man and man. His work shows strong sympathy for the values of the early American society. He employs themes from the early 1900’s rural life in New England. He uses the pastoral setting to examine the complex social and philosophical themes. Frost concentrates on ordinary subject matters but his emotional range is wide and deep, and his poems shift dramatically from a tone of humorous banter to the passionate expression of tragic experience. He also uses language considering his subject matters. His poetry is structured within traditional metrical and rhythmical schemes, and vernacular speeches. Daniel Hoffman regards Frost as the founder of “a new aesthetic of poetry as speeches.” This article aims at discussing Frost’s major themes highlighting his poetic mastery.