Breaking On Through

"I found an island in your arms
Country in your eyes
Arms that chain us
Eyes that lie
Break on through to the other side"

This is the third and final verse to the song Break On Through. I believe Jim Morrison is speaking on the effects of LSD and also death. Jim was an avid drug user who claimed he used to expand his mind, rather than escape pain. When he is saying an "I found an island in your arms" and "country in your eyes" I believe he is almost communicating to the drug as if it were a human being. Showing him new things and revealing more than any one "person" could do with actual arms and eyes. Morrison was obsessed with the unknown, the dark, and the mysterious. I think drugs were his outlet to this new world and his saying “I believe in a long, prolonged derangement of the senses to attain the unknown. Our pale reasoning hides the infinite from us.” explains it perfectly.
The second half of this verse I believe is about death. Jim Morrison claimed not to be afraid of death, saying "Life hurts a lot more." Jim saw death as a new beginning, rather than an end. When he says "arms that chain us" and "eyes that lie" he refers to the bounds of society. How we are held back by those around us and how we essentially hold ourselves back. "Chain us" is a metaphor, nothing is literally chaining us, but rather limiting our freedom and self expression, and filling us with "Eyes that lie". Morrison lived his life to the fullest. He experienced all the things a Rock N' Roll star can. I think he viewed death as the one thing he hadn't done, the Door he hadn't yet opened. He often said he didn't want to die in his sleep or of old age, but rather in a fiery plane crash so that he could hear, smell, taste and feel death, claiming "Death is only going to happen to you once; I don't want to miss it.”
The other side could be many things to many people. To Jim it was the unknown. Whether that was death, an acid peak, or a personal revelation we'll never know. What we do know is that Jim broke on through, and wants us to as well. He wants us to set ourselves free, releasing our fears of the earthly world. He used very complex metaphors and imagery in his writings. To some this could seem confusing, stupid or just gibberish from a hippie. To others his words live on, and shape our lives every day.
"We're going to kiss the snake on the tongue. Kiss the serpent. But if it senses fear, it'll eat us instantly. But if we kiss it without fear, it'll take us through the garden, through the gate, to the other side. Ride the snake... until the end of time."