百聞は一見に如かず（hyakubun wa ikken ni shikazu）： Seeing is believing.

There is a phrase hyakubun wa ikken ni shikazu (百聞は一見に如かず), literally seeing once is better than listening 100 times. That is seeing is believing.
There are some Japanese sayings which are also found in other languages, but there are other sayings which seem to exist only in Japan.
Many Japanese sayings are from old Chinese books, and many English sayings are from either Bible or Greek books or something.
What kind of sayings do you like?
I like isseki nicho (一石二鳥), literally one stone two birds. That is to kill two birds with one stone.