Vasiṣṭha's teaching (Mahārāmāyaṇa) 6.28.43

6.28.43

samyagdṛṣṭyā jagallakṣmīstatheyaṃ nāvabhāsate .
bhīrurabhyeti na yathā svasaṃkalpeṣu saṃbhramam .. 43

43. [Sanskrit available]
The sharp sighted man is never led away by the display of worldly grandeur, as even the most timid man is never afraid of a tiger in his imagination.

43a. This great show of worldly grandeur can never mislead the penetrating sight of the wise, as a monstrous creature of imagination cannot terrify even the most timid. (Because the one knows the falsity of the show as well as the other does that of imaginary monster).