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.
There is not really any courage at all in attacking hoary or antiquated things, any more than in offering to fight one's grandmother. The really courageous man is he who defies tyrannies young as the morning and superstitions fresh as the first flowers. The only true free-thinker is he whose intellect is as much free from the future as from the past.
Have no fear of the future. Let us go forward into its mysteries, tear away the veils which hide it from our eyes, and move onwards with confidence and courage.