The labor which it would require to make a single one of these guns by hand would exhaust the patience and perseverance of any ordinary workman.

The search for a theory of everything is one of the most exciting and challenging quests in modern physics.

战争不会消灭正直，它反而更需要正直——比和平时期更需要。

The beauty of mathematics lies in its simplicity and depth.

占据有利位置，更容易成功。  

To have a confident attitude, please learn to learn you do not have to learn the knowledge.

释义：善于运用自己的才能，才能实现财富的积累。这句话强调才能与财富的关系，提醒人们要充分发挥自身优势。