Like the sun and moon, they end but to begin anew; like the four seasons, they pass away to return once more.

He who is not sage and wise, humane and just, cannot use secret agent.s. And he who is not delicate and subtle cannot get the truth out of them.

All war is based on deception.

The nature of war is constant change.

He who relies solely on warlike measures shall be exterminated; he who relies solely on peaceful measures shall perish.

It is only one who is thoroughly acquainted with the evils of war that can thoroughly understand the profitable way of carrying it on.

Swift as the wind. Quiet as the forest. Conquer like the fire. Steady as the mountain