To understand is hard. Once one understands, action is easy.

When we undertake a task, we should not falter from first to last until the task is accomplished; if we fail, we should not begrudge our lives as a sacrifice-this is what we mean by loyalty. The ancient teaching of loyalty meant sometimes death.

If the idea of revolution is to win out, it must be through political enlightenment. It is useless to try to impose it by force of arms.

Class war is not the cause of social progress; it is a disease developed in the course of social progress. The cause of the disease is the inability to subsist, and the result of the disease is war.