Poetry probably dates back to the cavemen and the earliest shamans, who recorded events in pictorial stories. This cave painting at Lascaux, France, is believed to date from between 15000 and 13000 BC. Poetry is one of the oldest literary art forms. The earliest types of poetry were often sung or recited to pass on orally transmitted stories, laws, and information about ancestors, as the rhythmic and repetitive forms facilitated remembering reports before the development of writing. Poetry is always written in a strict form. Poets choose words according to their meaning and sound. Unlike prose, poetry is written in simple language.
Meaning is the word that refers comprehensively to the ideas expressed in the poem - the meaning or message of the poem. When we understand poetry, we often use the terms idea, theme, motif, and meaning. Usually an idea refers to a concept, principle, scheme, method, or plan. Poetry is a type of literature based on the interaction of words and rhythm. It often uses rhyme and meter (a set of rules for the number and arrangement of syllables in each line). In poetry, words are strung together to form sounds, images, and ideas that might be too complex or abstract to describe directly.
The main theme of "The Road Not Taken" is that it is often impossible to predict where a life-changing decision will lead. Therefore, one should make one's decision quickly and with confidence. It is normal to wonder how things would have turned out if one had chosen the other path, the road not taken.
The poet wants to express that it is cruel to keep the wild animals in the small enclosures of the zoo, far from their natural habitat. They feel angry, helpless and unhappy, remembering their life and environment in the forest.