[2399] One should be suspicious of an enemy outright;
even in a friend one should not place trust.
Peril arisen from a quarter free of peril
cuts away even the roots.
How indeed could one trust in him
with whom a quarrel has once been made?
One must stand in constant preparedness:
such a one is not enamored of his foes.
One should inspire trust in another, yet not trust him;
being oneself unsuspected, one should yet be suspicious.
The wise person should proceed in such and such a way
that another may not know his true state.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.