The poem "Father to Son" by Elizabeth Jennings evokes a sense of sadness and regret in the mind of the poet. The poem reflects the father's realization that he has failed to communicate with his son and impart his wisdom.

Heading 1: Theme of the Poem
The theme of the poem is the generation gap and the lack of communication between parents and children. The father feels that his son is growing distant from him, and he regrets not being able to guide him and teach him life's lessons.

Heading 2: Tone of the Poem
The tone of the poem is melancholic and regretful. The father is lamenting his inability to connect with his son and fears that he will lose him forever. He is filled with sadness and remorse for not being able to impart his knowledge and experiences.

Heading 3: Poetic Devices
The poet uses various poetic devices to convey her thoughts and feelings effectively. She employs metaphors to describe the father-son relationship, such as "a widening span" and "a river" that flows between them. The repetition of the phrase "Do not" reflects the father's frustration and desperation to make his son understand his point of view.

Heading 4: Conclusion
In conclusion, "Father to Son" is a poignant poem that highlights the importance of communication and understanding in familial relationships. The poem leaves a lasting impression on the reader, and one can feel the pain and regret in the father's words. It is a powerful reminder to cherish our loved ones and make an effort to bridge the gap between generations.

The poet is sad and somewhat irritated at the strained relationship with his son. He wants the son to return to his old house.
.  The cause of the growing gap between the father and his son is lack of understanding. Both need each other, yet they grow apart because of their ego-problem.