Lao Tzu (Lao Zi) circa 500 B.C.
Tao Te Ching (poem 31)

Weapons are tools of destruction hated by people.
Therefore followers of the Way never use them.
In peace leaders favour the creative left.
In war they favour the destructive right.

Weapons are tools of destruction,
not used by good leaders.
When their use cannot be avoided,
the best policy is calm restraint.

Even in victory there is no glory.
Those who celebrate victory delight in slaughter.
Those who delight in slaughter
will not be successful leaders.
The killing of many should be mourned with sorrow.
A victory should be celebrated with funeral ceremonies.