The opposite of fragile is something that gains from disorder.

The opposite of manliness isn't cowardice; it's technology.

The inability to predict outliers implies the inability to predict the course of history

Scientists may be in the business of laughing at their predecessors, but owing to an array of human mental dispositions, few realize that someone will laugh at their beliefs in the (disappointingly near) future.

You don't become completely free by just avoiding being a slave; you also need to avoid becoming a master.

Philosophers talk about truth and falsehood. People in life talk about payoff, exposure, and consequences (risks and rewards), hence fragility and antifragility. And sometimes philosophers and thinkers and those who study conflate Truth with risks and rewards.

A washing machine needs constant maintenance. It doesn't want any harm. It wants tranquility, and you need someone to - you're not going to harm it by continuously monitoring it and adjusting it.