心理学理论的价值是由其实用性衡量的。
To engage in agriculture, one must have patience and endure solitude.
Marine protected areas are like savings accounts for fish populations.
诗歌是一块画布,心灵可以在上面作画。
预测你未来的最好方法就是去创造它。
"The world is a mirror, and the mirror is a shadow."
To know good and evil is not enough; one must also do them.