How does language empower or limit the expression of our thoughts?

BOTH!!!---WHAT IS DEEMED AS "IMPORTANT" BY THE CULTURE WILL BE EXPANDED BY THE LANGUAGE--eg : MORE THAN 20 DIFFERENT MEANINGS FOR THE DIFFERENT TYPES OF "SNOW" TO/FOR/BY ALEUTIAN ESKIMOS,COMPARED TO THE RELATIVE LACK OF AFRICANS "WORD POWER" FOR THE SAME "STUFF"="SNOW"