This song definitely is in part a reference to the Greek philosopher Plato and his Allegory of the Cave. The Cave is the world of ignorance, illusion, and shadows; outside the Cave is the real world with real knowledge, true beauty, and deeper meaning. The song is saying that people need to get out of the Cave and stop hiding in their fantasy and ignorance, even though to due so is to risk pain and ridicule (as ignorance is bliss), because reality offers them so much more: it is better to risk it all and fail than never take any risks and spend the rest of time wondering.
This song definitely is in part a reference to the Greek philosopher Plato and his Allegory of the Cave. The Cave is the world of ignorance, illusion, and shadows; outside the Cave is the real world with real knowledge, true beauty, and deeper meaning. The song is saying that people need to get out of the Cave and stop hiding in their fantasy and ignorance, even though to due so is to risk pain and ridicule (as ignorance is bliss), because reality offers them so much more: it is better to risk it all and fail than never take any risks and spend the rest of time wondering.