Final answer:
In 'Those Winter Sundays,' the speaker regrets not appreciating the father's love, showing reflective appreciation for his father's sacrifices and the belated recognition of those acts as expressions of love.
Step-by-step explanation:
In the poem "Those Winter Sundays", the speaker indeed expresses regret for not recognizing the father's love and efforts. The poem conveys a sense of retrospective appreciation for the father who made sacrifices and performed thankless tasks to care for his family, seen especially in the imagery of warming the house on cold Sunday mornings. The speaker realizes that such mundane acts of service were, in fact, expressions of love that went unacknowledged.
The reflection on past coldness towards the warmth shown by the father highlights a common human experience. The speaker's regret showcases how maturity often brings a new perspective on the actions and affections of our parents.