money is everything and knowledge is of no use.

of no use
n. 无用(无效)
例句:
It is of no use boasting of being rich on a desert island.
在无人岛上夸耀富有也是白费力气。
It is of no use to talk to him; he is as deaf as a post.
跟他说话毫无用处，因为他一点也听见。
Lacking worth; of no use or value.
无价值的不值得的；无用的或无价值的

固定搭配，一定要用