Minecraft with PS3 and PS4?

I own a PS3 and a friend of mine owns a PS4. We want to play Minecraft over the internet together. I wondered if that is possible at all that these two consoles can connect thank you in advance for your help if there are more questions just ask

My Kalle,

Unfortunately, I have to tell you that it is not possible to play with these two consoles together.

That's a pity why not?

Because SONY SCHEIß are CAPITALISTS

OK thanks.