The article deals with the question, if, taking the validity of Hume’s thesis for granted, it is legitimate to deny the cognitive claim of ethics. The author draws on Wittgenstein’s differentiating between using the ethical terms in their absolute and relative senses. Using these terms in a relative sense is applied to their ethical using. The author intention is to show, that using ethical terms in this way is not contradictory to Hume’s thesis. If ethics avoided using its terms in their absolute senses, the validity of Hume’s thesis would not imply the rejection of its cognitive claim.