One of the most powerful experiences in which these questions would surface was listening to the guitar solo in Stairway to Heaven by Led Zeppelin. Some said the band had made a pact with the devil, that the song contained hidden satanic messages if played backwards. But for me, especially during the final solo, it felt like a portal opening onto something mysterious and absolute. As if those notes – in their apparent simplicity – held the power to evoke a longing for the infinite. Every chord seemed like a threshold to cross, an invitation to go beyond the visible and to question the deeper meaning of existence.