心理学研究的正确方向是行为的预测和控制。
The proper study of psychology is the prediction and control of behavior.
We need to be part of the solution, not part of the problem.
解释：大部分药材都以新鲜为好，但艾草却以陈年的为佳，体现了药材使用的特殊性。
"The way you think about time changes as you get older."
The key to success in research is to focus on fundamental problems that have long-term impact.