Lyric discussion by perlberg 

This song means "appreciate life" basically. Floyd's saying breathe in the air, enjoy what humans were meant to enjoy as intelligent beings. Leave, break away from monotony and typicality, but dont leave or forget your loved ones at the same time. Look around and find your own ground, path, existence.
Too many people get caught up digging holes one after another, it's almost senseless. Ride the wave, but if you concentrate on getting the biggest wave you'll miss out on life and eventually get an early grave. Enjoy existence, because after you're time is up, all your life has been are those laughs and tears, touches and sights, your memory man.

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