Understanding Misunderstanding

How's it to lose something I never have,

and to gain something that already mine,

Could someone solve the puzzle that I have?

For in my heart, there are some broken lines.

See the brightest black and the lightest white,

touch the softest hard and the hardest soft,

hear the quiet noise and the loud silence,

feel the smoothest rough and the roughest smooth.

I sing a song without any lyric,

I hum without any melody,

I am swimming here at the South Artic,

going to the North Antarctica bay.

I trust my doubt, confusion makes it clear,

the highest cave at the lowest summit,

the square-root of negative integers,

yes, I oppose - no, I affirm it.