expression
nature takes its course; water seeks its own level
A classical proverb meaning that things naturally flow to the easiest or most natural state, just as water flows downhill. Often used to express that one cannot fight natural tendencies or the course of events.
水の低きに就くが如しで、彼は努力せずとも成功への道を歩んだ。
Like water seeking its own level, he walked the path to success without even trying.
世の中は水の低きに就くが如し。無理に逆らう必要はない。
In this world, nature takes its course. There's no need to fight it.
A classical Japanese proverb derived from the natural observation that water flows to lower ground. The phrasing uses classical grammar (低き, 就く, 如し) and is often attributed to Chinese philosophical influence, but the exact origin is uncertain.