SB 11.16.11
guninam apy aham sutram
mahatam ca mahan aham
suksmanam apy aham jivo
durjayanam aham manah
Translation:
Among things possessing qualities I am the primary manifestation of nature, and among great things I am the total material creation. Among subtle things I am the spirit soul, and of things that are difficult to conquer I am the mind.