It goes without saying that… （从句）
=It is needless to say (that) （从句）
=It is obvious that…（从句）
It goes without saying that it pays to keep early hours.
There is no V.-ing.
=There is no way of V.-ing.
=There is no possibility of V.-ing.
=It is impossible to V.
=It is out of the question to V.
=No one can V.
=We can not V.
There is no denying that successful business lies in a healthy body and mind.
I am greatly convinced (that)…（从句）
=I am greatly assured (that) …(从句)
I am greatly convinced that prevention is better than cure.