Vyasa said Brahma is the effulgent seed from which existing as it does by itself, has originated the entire universe consisting of two kinds of being, viz., the mobile and the immobile,
व्यास उवाच ब्रह्म तेजोमयं शुक्रं यस्य सर्वमिदं जगत्। एकस्य ब्रह्मभूतस्य द्वयं स्थावरजङ्गमम्॥