Selo yathā ekaghano vātena na samīrati,
evaṃ nindāpasaṃsāsu na samiñjanti paṇḍitā.

Just as a solid rock is not shaken by the storm,
even so the wise are not affected by praise or blame.

Dhammapada 6.81
The Dhammapada: The Buddha’s Path of Wisdom, translated from Pāli by Acharya Buddharakkhita