Each generation exercises power over its successors: and each, in so far as it modifies the environment bequeathed to it and rebels against tradition, resists and limits the power of its predecessors.
Each new power won by man is a power over man as well. Each advance leaves him weaker as well as stronger.
The safest road to hell is the gradual one - the gentle slope, soft underfoot, without sudden turnings, without milestones, without signposts.