10、There is no royal road toscience， and only those who do not dread the fatiguing climb of its steep pathshave a chance of gaining its luminous summits.

 

　　在科学上没有平坦大道，只有不畏劳苦沿着陡峭山路攀登的人，才有希望达到光辉的顶点。

 

　　11、Books， like friends，should be few and well chosen.

 

　　书籍和朋友，在好不在多。

 

　　12、That is a good book whichis opened with expectation and closed with profit.——L.W.Akott