在家不會(huì)接待客人，出去后才知道這個(gè)問題的重要性。
教師個(gè)人的范例，對(duì)于青年人的心靈，是任何東西都不可能代替的最有用的陽光。
Every book is a journey the writer takes alone first.
The pursuit of truth is a noble goal in life.
It is not enough to observe and experiment, theorize and calculate. One must also imagine.
不要哭泣；不要憤怒。去理解。
The next generation won't ask what we said—they'll ask what we did.