Based on the provided information, the text supports the following inferences about Boxer's motivations:
1. Boxer is motivated by his own strong work ethic.
2. Boxer is motivated by his friendship with and respect for Clover.
These inferences can be drawn from the text's portrayal of Boxer as a dedicated and hardworking character who holds a strong sense of loyalty towards his friends, particularly his bond with Clover. Additionally, the text emphasizes Boxer's commitment to his work and his determination to contribute to the cause, indicating his personal motivation rooted in his work ethic. However, there is no specific indication in the text supporting the ideas that Boxer is motivated by Napoleon's ideas or motivated by Napoleon's dedication to equality.