Tone and mood are often confused, so now would be a good time to make sure you understand the difference between the two. If tone is the author's attitude toward a subject, then mood is how we are made to feel as readers, or the emotion evoked by the author.
The poem includes neoclassical elements such as elevated language and heroic couplets. The line "Fair Freedom now her ensigns bright displays" is an example of the elevated style of the poem. The poem also expresses a political (nationalistic) point of view, and its subject is a desirable human state in the future.
What motivates Antigone to defy Creon's decree by burying her brother is divine authority. She thought it was not Creon's authority to give such a decree when there are divine laws that are stronger than human laws.
<span>Seize the day and make the most of it</span>