我们这个时代最大的挑战不是技术进步,而是道德进步。
The only freedom which deserves the name is that of pursuing our own good in our way, so long as we do not attempt to deprive others of theirs or impede their efforts to obtain it.
解释:栋梁不厚实,就不能承受房屋的重量。最重要的莫过于国事,对于栋梁人才来说,最重要的莫过于德行。