Meaning behind Gang Starr's "Above the Clouds"?

Some think it is about getting high and smoking, but it is really about death. read the 2nd to last line where he says WHEN WE DIE HARD, TO BUILD THE MONUMENT TO HONOR US WITH. it is obviously about death. But when he says the burning truth, 150 absolut proof some think he is talking about getting drunk/wasted/high. I think the song is about death and going to heaven. Gangstarr rapped about some heavy shytt