膨胀宇宙模型表明，宇宙在大爆炸后的最初几分之一秒内呈指数级膨胀。

要维护民族独立，必须加强民族团结。

变化是不可避免的，但成长是可选的。

"A book is a fragile creature, it suffers the wear of time, it fears rodents, the elements and clumsy hands. So the librarian protects the books not only against mankind but also against nature and devotes his life to this war with the forces of oblivion."