user-1: Can anyone please explain these aphorism / these aphorisms?
Thank you in advance.

user254: I don't know, so the following is a complete guess, and I hope someone will give a better answer.
Apparently the aphorism come from Dōgen.
Dōgen has a perhaps-non-standard view of Buddha-nature, which he calls Busshō.
My guesses are:

If according to Dōgen everything (real) is Buddha-nature then (because everything real is impermanent), therefore everything (i.e. Buddha-nature) is impermanent.
So for example any description of Buddha-nature and anyone describing Buddha-nature and anything to which the term Buddha-nature could be applied is impermanent.
As for the converse (i.e. impermanence is Buddha-nature), is that related to the third noble truth, or to rise and fall?


-1: <p>Can anyone please explain these aphorism / these aphorisms?</p>

<p>Thank you in advance.</p>
 254: <p>I don't know, so the following is a complete guess, and I hope someone will give a better answer.</p>

<p>Apparently the aphorism come from <a href="http://en.wikipedia.org/wiki/D%C5%8Dgen" rel="nofollow">Dōgen</a>.</p>

<p>Dōgen has a perhaps-non-standard view of Buddha-nature, which he calls <a href="http://en.wikipedia.org/wiki/Bussh%C5%8D_(Sh%C5%8Db%C5%8Dgenz%C5%8D)" rel="nofollow">Busshō</a>.</p>

<p>My guesses are:</p>

<ul>
<li><p>If according to Dōgen everything (real) is Buddha-nature then (because everything real is impermanent), therefore everything (i.e. Buddha-nature) is impermanent.
So for example any description of Buddha-nature and anyone describing Buddha-nature and anything to which the term Buddha-nature could be applied is impermanent.</p></li>
<li><p>As for the converse (i.e. impermanence is Buddha-nature), is that related to the third noble truth, or to <a href="http://en.wikipedia.org/wiki/Vipassan%C4%81-%C3%B1%C4%81%E1%B9%87a" rel="nofollow">rise and fall</a>?</p></li>
</ul>
