Because

The lyrics connect simple features of the natural world with strong feelings. The speaker responds to the round Earth, the high wind, and the blue sky with excitement, wonder, and sadness. The mood moves between pleasure and emotional intensity, then briefly turns toward love before returning to the sky.

Several expressions suggest that these reactions are larger than ordinary responses. “It turns me on” can mean that something excites or energizes the speaker, while “it blows my mind” suggests overwhelming amazement. The blue sky “makes me cry,” which may express beauty or joy so powerful that it becomes painful. The statement that love is “old” and “new” presents it as both familiar and constantly renewed.

The repeated word “because” makes the feelings sound as if they have clear causes, but the connections remain mysterious: a round world or a blue sky does not usually explain such intense emotion. The lyrics may be describing the speaker’s openness to beauty and love, rather than giving a logical argument. The final sadness is also ambiguous; it could be sorrow, wonder, or simply emotion that is difficult to name.