What does Doolittle say Liza is worth to him?

In George Bernard Shaw's play "Pygmalion," Professor Henry Higgins, not Doolittle, expresses the idea that Liza Doolittle is a valuable project and reflects on her worth in terms of her potential transformation. He sees her as a significant challenge and a testament to his skills in phonetics and social engineering. If you're looking for Doolittle's perspective, he values Liza in a more personal sense, acknowledging her independence and spirited nature, though he is less focused on her worth in a material or social context.