Shiva Alone Is

śivo guruḥ śivo vedaḥ śiva devaḥ śivaḥ prabhuḥ |
śivo'smyahaṁ śivaḥ sarvaṁ śivadanyanna kiṁcana ||

Shiva alone is Guru; Shiva alone is Vedas;
Shiva alone is Lord; Shiva alone is I;
Shiva alone is All. There is none other than Shiva.

~ Varaha Upanishad (IV.32) of the Krsna Yajurveda

Aum Namah Shivaya.