A malicious person who intends to offend a sage
is like one who raises his head and spits at heaven;
instead of reaching heaven, the spittle falls back on his face.
It is the same with someone who throws dust against the wind;
instead of going elsewhere, the dust defiles his own body.
The sage cannot be offended. Offenses will inevitably destroy the offender.
—Buddha Shakyamuni, Sutra in Forty-Two Sections