samudraamaapah pravishanti yadvat |
tadvatkaamaa yam pravishanti sarve 
sa shaantimaapnoti na kaamakaamee || 70 ||

Just like the ocean remains unmoved though water enters it from all sides, so does that (tranquil) individual attain peace in whom all desires enter, but not the “desirer of desires”.

aapuryamaanam : filled with water from all sides
achalapratishtham : unmoved
samudram : ocean
aapah : water
pravishanti : enters
yadvat : just like
tadvat : so does
kaamaah : desires
yam : in that individual
pravishanti: enter
sah : that individual
shaantim : peace
aapnoti : attains
na : not
kaamakaamee : desirer of desires

Here Shri Krishna provides another pictorial description of the individual of steady wisdom : a deep, large ocean that has many streams of water entering it. No matter how many streams enter the ocean, regardless of how gently or how forcefully they enter it, the ocean always remains calm and undisturbed.

In the same way, an individual of steady wisdom does not get impacted by any number of material objects or desires that he experiences. They fail to disturb his state of equanimity. Furthermore, even if the individual has to get angry in order to perform his svadharma in the material world, he is rooted in tranquility. And that is just like the ocean surface could experience stormy weather, but remain tranquil underneath the surface.

On the other hand, the person who is steeped in ignorance and does not possess wisdom will never attain peace. Here he is called the “desirer of desires”. In other words, this person still thinks that harbouring and fulfilling desires will lead to peace and happiness. The fundamental shift from selfish desire oriented work to svadharma prompted work has not happened for him.

Note the change in meter to emphasize the point made in this shloka.