心理学必须建立在直接经验和内省的基础上。

The real moral test of a society is how it treats those who are at the dawn of life, the children; those who are in the twilight of life, the aged; and those who are in the shadow of life, the sick, the needy and the handicapped.

Innovation is not about saying yes to everything. It's about saying no to all but the most crucial features.

The power of abstraction is that it allows us to reason about systems at a higher level, without getting bogged down in the details.

在危机时刻，真正的领导者会把人民置于利润之前而脱颖而出。

Success is when preparation meets opportunity.