The too perfect security of ...

The too perfect security of the Upper-worlders had led them to a slow movement of degeneration, a general dwindling in size, strength, and intelligence.
The too perfect security of the Upper-worlders had led them to a slow movement of degeneration, a general dwindling in size, strength, and intelligence.

Quotes from the same author

If you fell down yesterday, stand up today.
You are not mechanics, you are warriors. You have been trained, not to think, but to do.
Night, the mother of fear and mystery, was coming upon me.
The teacher, whether mother, priest, or schoolmaster, is the real maker of history.
The State's your mother, your father, the totality of your interests. No discipline can be too severe for the man that denies thatby word or deed.