According to Osho, 'species' here means nonhuman life such as birds, fish, animals, and even trees, beings still attuned to existence. Nansen urges living and working among them because humans have grown too serious, knowledgeable, and ego-driven, losing innocence and playfulness. By mixing with other species, we relearn harmony, ease, and joy, letting existence's mysteries open without the neurotic urge to conquer nature.
It means spending time with animals, birds, and trees so their natural, playful way can teach us to be relaxed and alive again.