妙法蓮華經玄義 7.234

7.234

譬如石蓮，黑則叵染，硬則叵壞，不方不圓，不生不滅。劫初無種故不生，今不異初故不滅，是名蓮子相。一切眾生自性清淨心，亦復如是，不為客塵所染，生死重積，而心性不住、不動、不生不滅，即是佛界如是相。《淨名》曰：「一切眾生即菩提相。」即其義也。

For instance, like a stone-hard lotus seed: being black, it cannot be dyed; being hard, it cannot be broken; it is neither square nor round, neither produced nor destroyed. Because there was no seed at the beginning of the kalpa, it is unproduced; because it does not differ at present from the beginning, it is undestroyed—this is called the lotus seed's appearance. The innately pure mind of all sentient beings is also like this: undefiled by adventitious defilements, though births and deaths heavily accumulate, the mind-nature does not abide, does not move, and is neither produced nor destroyed; this is the buddha realm's suchness of appearance. The Vimalakīrti-nirdeśa says, 'All sentient beings are themselves the appearance of bodhi'—this is its meaning.