brahmovāca
mānasā me sutā yuṣmat-
pūrvajāḥ sanakādayaḥ
cerur vihāyasā lokāl
lokeṣu vigata-spṛhāḥ
brahmā uvāca - Lord Brahmā said; mānasāḥ - born from the mind; me - my; sutāḥ - sons; yuṣmat - than you; pūrva-jāḥ - born previously; sanaka-ādayaḥ - headed by Sanaka; ceruḥ - traveled; vihāyasā - by traveling in outer space or flying in the sky; lokān - to the material and spiritual worlds; lokeṣu - among the people; vigata-spṛhāḥ - without any desire.
When we speak of desire we refer to desire for material sense gratification. Saintly persons like Sanaka, Sanātana, Sanandana and Sanat-kumāra have no material desire, but sometimes they travel all over the universe, out of their own accord, to preach devotional service.