The song "It's Impossible" by Perry Como expresses a deep and intense longing for a love that feels unattainable and impossible to live without. The lyrics use vivid imagery to convey the immensity of this love and the impossibility of being without it.

The repetition of the phrase "It's impossible" throughout the song emphasizes the strong belief that the love in question is beyond reach or comprehension. The lyrics compare the impossibility of various scenarios, such as telling the sun to leave the sky or asking a baby not to cry, to illustrate the magnitude of this love.

The singer pleads to hold the person closer without feeling their absence, highlighting the emotional impact of their presence. The line "Split the second that I never think of you" conveys the idea that the person occupies the singer's thoughts constantly, making it impossible to imagine a life without them.

The comparisons to the unstoppable force of the ocean rushing to the shore further magnify the intensity and inevitability of this love. The mention of selling one's soul and offering the entire world to have this love demonstrates the lengths the singer would go to in order to obtain and preserve this love.

Ultimately, the song conveys a sense of desperation and intense love that cannot be easily explained or replicated. It speaks to the power of love and the emotional impact it can have on a person's life, making it impossible to live without.