Vasiṣṭha's teaching (Mahārāmāyaṇa) 3.60.58

3.60.58

na kiṃcitkenaciddhyāptaṃ na kiṃcitkenacitsthitam .
cidākāśamidaṃ śāntamataḥ sarvamabhittimat .. 58

57. [Sanskrit available] Such is the case with all the myriads of beings, whether they are living, dead or to come to life; and the same accidents take place in the particles of all human minds (like the concussions of atomic forces).

58. [Sanskrit available] All this is the empty sphere of the Intellect, all quiet and without any basis or substratum. It is neither peopled nor filled by any thing except its own native thoughts.