True courage is not the absence of fear, but moving forward despite it.
我曾经整天不吃饭,整夜不睡觉,去苦苦思索,结果没有益处,还不如去学习。
孔子说:“《关雎》这篇诗,快乐却不淫秽,悲哀却不伤痛。”
In quantum mechanics, the act of measurement can change the state of the system being measured.
Education is the root system that sustains all progress in responsible forestry practices.