Something might be true while being harmful and dangerous in the highest degree. Indeed, it might be a basic characteristic of existence that those who know it completely would perish, in which case the strength of a spirit should be measured according to how much of the 'truth' one could still barely endure- or to put it more clearly, to what degree one would require it to be thinned down, shrouded, sweetened, blunted, falsified.
Courage becomes a worthwhile and meaningful virtue when it is regarded not so much as a willingness to die manfully but as a determination to live decently.
We need the iron qualities that go with true manhood. We need the positive virtues of resolution, of courage, of indomitable will, of power to do without shrinking the rough work that must always be done.
If one has no affection for a person or a system, one should feel free to give the fullest expression to his disaffection so long as he does not contemplate, promote, or incite violence.