好弓难以拉开,然而可以射得高射得深;良马难以驾御,然而可以负重行远。
The work of art is a question, not an answer.
The biggest risk is not taking any risk. In a world that's changing quickly, the only strategy that is guaranteed to fail is not taking risks.
The only truly secure system is one that is powered off, cast in a block of concrete and sealed in a lead-lined room with armed guards - and even then I have my doubts.