To live is the rarest thing in the world. Most people exist, that is all.
聪明人:在乌云显现出来之前就看到暴风雨即将来临的人。
实现明天理想的唯一障碍是今天的疑虑。
The advancement of mathematics is through the continuous questioning of established truths.
解释:在中药中,以草本植物为主的药材占据重要地位,体现了草本植物的药用价值。