A proverb meaning that seeing something for oneself is more convincing than hearing about it many times (seeing is believing).
百聞は一見にしかず。まずは実際に見て判断しよう。
Seeing is believing. First, see it for yourself and judge.
彼女は百聞は一見にしかずという考えで、説明を聞くよりも自分で試した。
She believed that seeing is believing, so she tried it herself rather than just listening to an explanation.
新製品について百聞は一見にしかず、ショールームで実物を確かめた方がいい。
About the new product: seeing is believing — it's better to check the actual item in the showroom.