While tolerance is acclaimed almost unanimously as an indispensable value i
n pluralistic and democratic societies, the meaning of this virtue is far f
rom obvious. There are good reasons to believe that the inflationary expect
ations addressed to it tend to cover up its specific difficulty. The A. the
refore offers a conceptual analysis of the conditions of tolerance, placing
particular emphasis on the conflict of reasons internal to the tolerating
person, and pointing to the reflective structure of practical reason. In th
is formal characterization, tolerance appears as a kind of permission groun
ded in the principle of exclusion of certain reasons for acting. If indeed
tolerance presupposes such a complex balance of reasons, its moral value ca
n never be taken for granted since it depends entirely on the quality of th
e reasons on the balance sheet.