The blindness of unbelievers in no way detracts from the clarity of the gospel; the sun is no less bright because blind men do not perceive its light.
Our rate of progress is such that an individual human being, of ordinary length of life, will be called on to face novel situations which find no parallel in his past. The fixed person, for the fixed duties, who, in older societies was such a godsend, in the future will be a public danger.