"The truth is rarely pure and never simple."

Validate your thoughts through actions.

逻辑学研究不仅仅是关于形式系统，而是理解理性思维的基本结构。

The process of discovery in mathematics is often more important than the result itself.

The writer’s task is to illuminate the darkness.

The decay of political institutions is often a result of the inability to adapt to changing circumstances, leading to rigidity and eventual decline.