心理过程进化是为了解决实际问题。
Mental processes evolved to solve practical problems.
The light is what guides you home, the warmth is what keeps you there.
"The past is a candle at great distance: too close to let you quit, too far to comfort you."
没有伟大的意志力就没有伟大的才能。
精神的平静是最高境界。
我们必须超越碳信用——真正的影响来自全面的土地管理。
"The more you try to understand, the less you know."