Sometimes a truism can be proclaimed in a manner that makes it startling.
Even if what you were suggesting was true, you would merely be confirming an old moral truism that evil actions can have good consequences.
It is a truism that rights and responsibilities go hand in hand.
It is a truism to say that humanity is gone out of journalism.
It's an obvious truism but to succeed, the team's whole must exceed the sum of its parts.
It is a truism to say that we describe the world through the lens our own experience.
But, there is an old truism in public relations - you don't repeat the charges against you.
It is a truism to say that fieldwork is a prerequisite to any sort of research on Neotropical birds.
An old truism regarding alcoholism is that if someone close to you thinks it's a problem, it's a problem.
Like other valid theorems, this is a truism , but it is not useless, for it helps in organising the argument.