ɐkˈoːɹdɪŋ tə kˌeɪˈɛn dʒˈeɪɐtˌɪlɛk, ðə ɹˈɪɡvɛdə ɛkspɹˈɛsᵻz skˈɛptɪsˌɪzəm ɐbˌaʊt mˈeɪdʒɚ dˈiːətiz sˈʌtʃ ɐz ˈɪndɹə; wˈɛðɚ hiː ˈiːvən ɛɡzˈɪsts, æz wˈɛl æz wˈɛðɚ ðə jˈuːnɪvˌɜːs hɐz ˌɛni kɹiːˈeɪɾɚ ænd wˈɛðɚ ðɪs kæn ˈɛvɚ biː nˈoʊn, æz ˈɛvɪdənst ɪn ɪts ˈeɪtθ ænd tˈɛnθ bˈʊk, pɚtˈɪkjʊlɚli ɪn ɪts nˈæsɐdˌɪjə sˈʌktə.
According to KN Jayatilleke, the Rigveda expresses skepticism about major deities such as Indra; whether he even exists, as well as whether the universe has any creator and whether this can ever be known, as evidenced in its eighth and tenth book, particularly in its Nasadiya Sukta.