The quietest person's persistence in this sense can speak the loudest

from Mike G – Chanel Lyrics on Rap Genius

Meaning

If a person who is generally quiet perseveres with whatever they are doing, great things will come to them which will get other peoples' attention meaning they’ll be ‘speaking the loudest’.

To help improve the meaning of these lyrics, visit “Chanel” by Mike G Lyrics and leave a comment on the lyrics box