To study the Buddha Way is to study the self. / To study the self is to forget the self. / To forget the self is to be actualized by the myriad things. / When actualized by the myriad things, your body and mind / as well as the bodies and minds of others drop away. / No trace of realization remains and this no trace continues endlessly.
Source: Shobogenzo, 'Genjokoan' (1233), Dogen; English as in Kazuaki Tanahashi (ed.), Moon in a Dewdrop, 1985
This is the most famous passage in Dogen — the opening of Genjokoan in the Shobogenzo, composed 1233. The English here tracks the Tanahashi/Aitken rendering nearly word for word ('actualized by the myriad things', 'no trace of realization remains and this no-trace continues endlessly'); some editions read 'enlightenment' for 'realization'. Attribution is secure; only the translator credit is unstated in the record.