Is the firewall that Mint gives you enough to protect my pc against viruses?

Hi, I switched to Mint like a week ago, and since I did I noticed about something; there is no default antivirus, I've tried different options but anyone convinced me. So, now I ask you: Should I install any antivirus or just set the firewall? Or both? And in the case that the answer is both, what antivirus should I install?