If you’re on a truck traveling at 60mph, and throw a ball forward at 60mph, that ball is moving at 120mph.
But if you replace the ball with a flashlight, then the light isn’t moving at the speed of light plus 60mph. Instead, it slows down so as not to exceed the speed of light.
It’s like if you threw that ball at 60mph and it went flying forward, but at 10mph, no matter how hard you throw.
That people with mental health issues hear different types of voices depending on the country. If someone with schizophrenia from the US hears voices, it is more aggressive or negative while someone from Africa or India might hear a more playful voice. I think that says a lot about the different cultures and upbringing.
https://news.stanford.edu/2014/07/16/voices-culture-luhrmann-071614/