I have no idea why my if statement not working

This is my code:

def main(subject):
    subject = input("Which subject do you want to learn?")
    if subject == English:
        print("I glad to hear that!")

When I run python3 "File name.py" in Linux terminal, nothing happened.

I tried to define the "English" but I got a syntax error in the compiler.

Am I missing something in my code to run the if statement properly?