To write poetry after Auschwitz is barbaric.

For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.

太阳，带着所有围绕它运行并依赖它的行星，仍然能像在宇宙中没有其他事情可做一样，使一串葡萄成熟。

The harder the conflict, the more glorious the triumph.

The essence of philosophy is not the possession of truth but the search for truth.