1 重要的不是思想,而是思想的深度。
The important is not thinking but the depth of thinking.
2 思想家会离开人世,但它的思想将永不消亡,人不能永生,思想却可以永存。
The thinkers will leave this world, but their thoughts will never die out. people can not be alive forever, but their thoughts can be perpetuated.