If it were only that people have diversities of taste, that is reason enough for not attempting to shape them all after one model. But different persons also require different conditions for their spiritual development, and can no more exist healthily in the same moral, than all the varieties of plants can in the same physical, atmosphere and climate.
John Stuart MillSo natural to mankind is intolerance ... that religious freedom has hardly anywhere been practically realized.
John Stuart MillAsk yourself whether you are happy and you cease to be so. The only chance is to treat not happiness, but some end external to it, as the purpose of life.
John Stuart Mill