Four cardinal directions 
(North, South, East, and West).

Four classical elements 
(Earth, Water, Air, and Fire).

Four seasons 
(Winter, Spring, Summer, and Autumn).

Lunar cycle 
(New Moon, First Quarter, Full Moon, and Last Quarter).

Four fundamental forces of nature (Gravity, Electromagnetism, Strong Nuclear Force, Weak Nuclear Force).

Four fundamental states of matter (Solid, Liquid, Gas, Plasma). nostr:note1vu0wkkluxa9azkrh0vet4749pfayhcmf8v8hrdv5q8zetd6pufksfx6hvc 

 Wow, that's a lot of 4's.  

 Up 4 ever