Verse 32

ब्रह्मन् जगति भूतानां हृदयं तत्किमुच्यते ।इदं सर्वं महादर्शे यस्मिंस्तत्प्रतिबिम्बति

In plain words

Śrī Rāma said: O brahman, in the world, what is it that is called the 'heart' of beings -- that great mirror in which all this stands reflected?