it goes without saying
Cela va sans dire que M. Tanaka a tout fait par lui-même.
It goes without saying that Mr. Tanaka did everything by himself.
Si cela va sans dire, cela ira encore mieux en le disant.
If it goes without saying, it will go even better by saying it.
Cela va sans dire que le temps, c'est de l'argent.
It goes without saying that time is money.