农业的真正进步意味着让土地比我们发现时更好。
The history of mathematics is a history of human curiosity and ingenuity.
正派人的话,明明知道了为了我好,内心感激却未必高兴;奸邪人的话,明明知道是在奉承我,但听着十分顺耳,所以未必生气。由此可知听取忠言是多么艰难。
I declare after all there is no enjoyment like reading! How much sooner one tires of any thing than of a book!