在學(xué)習(xí)結(jié)束時(shí),我們知道物理學(xué)的所有過(guò)去,但對(duì)現(xiàn)在和未來(lái)一無(wú)所知。
The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.
【解釋】不孝的事有三件,其中又以沒(méi)有子孫后代為最大。