help, I have to make a description of this calligraphy

[custom_art365]

http://imgur.com/a/kOZNP

水惟善下能成海，山不爭高自極天

for me it is hard to describe the meaning of this to the viewers,thank you for your attention and help.

[mokushiroku]

You will never get a 100% objective and clear description for this. I'll tell you why: The artist is referencing the Tao De Ching. I have a copy sitting right in front of me. The reference is to chapter 8.

Bascially, Laozi is advocating that people be like water. Do not fight against nature; flow naturally to where you should go. Act according to natural order.

You could play on that.

Or just say "Be like water" (I think Bruce Lee said that), if you are selling it to people who don't understand Chinese. That should be "deep" to them.

[custom_art365]

"be like water", "do not fight against nature" , “act according to nature order" , very good, thank you！