We need to be vigilant about the security of the Internet.

【译文】 孔子说：“譬如堆山，还差一筐，没堆成就停了，功亏一篑是自己造成的；譬如填坑，只倒一筐，继续填下去，坚持不懈是自己决定的。”

"The hardest thing in life is to know which bridge to cross and which to burn."

No rain， no rainbow.

"The past is always tense, the future perfect."