America has lost a voice that strongly and consistently provided the road map to steer us away from the political and cultural abyss we currently face. That voice belonged to historian Gertrude Himmelfarb, who died Dec. 30 at age 97. Gertrude spoke passionately about how our most important institutions—families, communities, churches, and private enterprise—must be “remoralized,” as it is only through a strong civil society that we can have a strong nation. In her words, people learn to function as “free, responsible, moral adults” in these institutions and apply that responsibility and morality as citizens of a nation. But she...