Great engineering is invisible—it just works seamlessly.
            
            
        
        
    伟大的工程是无形的——它只是无缝地运作。
        We often think happiness is about getting what we want, but it's more about wanting what we have.
                    States are rational actors, and they will always act in their own self-interest.
                    I can never be safe; I always try and go against the grain. As soon as I accomplish one thing, I just set a higher goal. That’s how I’ve gotten to where I am.