Humanist concerns to empower human beings and to promote justice inspired the modern argumentation movement. Turning to audience adherence and acceptability of inferential links raised a spectre of pernicious relativism that undermines concerns for justice. Invoking Perelman’s universal audi-ence as a remedy only begs the question with ‘whose universal audience?’ and frustrates fulfilling the jus-tice commitment. Turning discourse toward the common good better addresses concerns of justice and social justice.

Ben shu jie shao le gong zi zhen, wei yuan, yan fu, kang you wei, tan si tong, liang qi chao, chen tian hua, zhang bing lin deng wan qing si xiang jia de zhe xue si xiang.

Perelman’s discussion about the distinction and relation between the rational and the reason-able could be seen as an attempt to bring forward a new understanding of rationality. In light of the concep-tion of situated reason, this paper argues that Perelman’s explication of the dialectic of the rational and the reasonable highlights the balance of universality and contexuality, and could contribute a fuller conception of rationality to establishing a solid philosophical foundation for Johnson’s informal logic.