Adaptability is the most important skill in today's rapidly changing world.
Mental phenomena are tools in the service of life.
在你和世界的斗争中,站在世界一边。
估计问题的性质不同。在这里,我们不关心检验特定的假设,而是关心估计参数的值。
The true value of a forest cannot be measured in board feet alone.
The test of a psychological idea is its life-enhancing power.