A long habit of not thinking a thing wrong gives it a superficial appearance of being right.
进步不仅仅是向前迈进,而是一起向前迈进。
不要借钱给你的朋友,除非你愿意把借出去的钱当成礼物。
你的自我价值由你自己决定。你不必依赖别人告诉你你是谁。
The beauty of mathematics lies in its ability to simplify complex phenomena.