Answer:
Higgins
Step-by-step explanation:
This statement is said by Higgins when he is trying to convince himself of taking on Liza as a pupil. Higgins is an expert on phonetics, and he is obsessed with the topic. He also believes it to be very powerful in the social world. Because of this, he decides to take on Liza as a pupil and attempt to transform her into a proper lady with elegant speech.