Final answer:
The purpose of the oxymoron and paradox used in this excerpt is to emphasize a point about love.
Step-by-step explanation:
The purpose of the oxymoron and paradox used in this excerpt is to emphasize a point about love. The author uses these literary devices to highlight the complexity and abstract nature of love, and to convey the idea that love cannot be easily defined or understood. By using contradictory language and ideas, the author provokes the reader to think deeply about the nature of love and its impact on our emotions and perceptions.