Final answer:
The speaker's attitude in "To Althea, from Prison" is one of resilience and finding freedom within the mind and spirit despite physical constraints.
Step-by-step explanation:
The attitude of the speaker in "To Althea, from Prison" reflects a paradoxical sense of freedom despite being physically imprisoned. The poem articulates the idea that the mind and spirit can remain free and even joyful despite external constraints imposed upon the body. This theme of inner freedom is also explored in other texts and contexts, such as the reflections of characters who find solace in confinement, or philosophical discussions about the nature of freedom and reality, like Socrates's allegory of the cave. The speaker's attitude suggests a resilience and the capacity to find happiness and liberty in one's thoughts and beliefs, regardless of physical circumstances.