卒：同“猝”，指突然事变。这两句大意是：心中没有预先考虑应对事变的方法，就不能应付突然变故。

"Innovation is the ability to see change as an opportunity - not a threat."

The greatest cruelty is our casual blindness to the despair of others.

知识最大的敌人不是无知，而是知识的幻觉。