An object that tells of the loss, destruction, disappearance of objects. Does not speak of itself. Tells of others. Will it include them?

The only way to do great work is to love what you do.

Everyone thinks of changing the world, but no one thinks of changing himself.

It is wrong to have an ideal view of the world. That's where the mischief starts. That's where everything starts unravelling.

制造链式反应机器的基本点当然是确保每次裂变产生一定数量的中子，其中一些中子再次有效地产生裂变。