Do you realize how hard it is to keep your mind clear when somebody's telling you to keep your mind clear?

Do you realize how hard it is to keep your mind clear when somebody's telling you to keep your mind clear?

你知道当有人告诉你要保持头脑清醒时，保持头脑清醒有多难吗?

-- Tom Upton 汤姆·厄普顿