我们不能用制造问题时的同一水平思维来解决问题。
If you want to keep something precious, you have to lock it up and throw away the key.
Learning is essentially a matter of stimulus-response connections.
Digital won't kill paper; complacency will.
Escribir es una forma de resistencia contra el olvido.
最大的风险就是不冒任何风险。