黑暗不能驱逐黑暗;只有光明能够做到。仇恨不能驱逐仇恨;只有爱能够做到。
无人机的安全性不是选项,而是底线。
The concept of a multiverse arises naturally from the inflationary model of the universe.
People are curious. A few people are. They will be driven to find things out, even trivial things. They will put things together, knowing all along that they may be mistaken. You see them going around with notebooks, scraping the dirt off gravestones, reading microfilm, just in the hope of seeing this trickle in time, making a connection, rescuing one thing from the rubbish.