This can be stated in active form. Alternate translation: "He considers all the earth's inhabitants as nothing" (See: [[rc://en/ta/man/translate/figs-activepassive]])
It may be helpful to add additional detail. Alternate translation: "When he decides to do something, no one can stop him" (See: [[rc://en/ta/man/translate/figs-explicit]])
This can be stated as an indirect quotation. Alternate translation: "No one can question what he does." (See: [[rc://en/ta/man/translate/figs-quotations]])