The past is never dead. It's not even past.
Safety isn't just a policy, it's a culture that must be lived every day in our mines.
The act of creation is an act of transcendence.
The only limit to our realization of tomorrow is our doubts of today.
The novel is a great discovery: far greater than Galileo's telescope or somebody else's wireless.
Our license to operate depends as much on social acceptance as it does on technical capability.
自由始于无知结束之时。