The phrase "always declared that" is correct and usable in written English.
It can be used when referring to a consistent statement or assertion made by someone over time.
Example: "The scientist has always declared that climate change is a pressing issue that requires immediate action."
Alternatives: "has consistently stated that" or "has repeatedly asserted that".
But he always declared that philosophy and science were in the same boat, a boat which, as in Neurath's simile, we are forced to rebuild plank by plank while staying afloat in it.
The President, dynamic as always, declared that America would not take its enemy's exit lying down.
Despite his admiration for his slide-slinging cousin Booker T Washington –"Bukka" – White, young Riley aspired to sophistication: his guitar style drew on jazzmen Django Reinhardt and Charlie Christian and the supremely urbane Lonnie Johnson; his bands featured horn sections rather than harmonicas and he always declared that his favourite singers were Frank Sinatra and Tony Bennett.
And our president has always declared that our country is a stable supplier to the energy markets in the world.
Basing itself on Sacred Scripture, which presents homosexual acts as acts of grave depravity, tradition has always declared that "homosexual acts are intrinsically disordered".
Basing itself upon Sacred Scripture, which presents homosexual acts as acts of grave depravity, tradition has always declared that homosexual acts are gravely disordered.
For two years the White House has been determinedly cheerful, always declaring that the recovery was on track, that its policies were working fine.
Neuro-enthusiasts are always declaring that an MRI of the brain in action demonstrates that some mental state is not just happening but is really, truly, is-so happening.
The Egyptian Armed Forces first declared, is still declaring and will always declare that it stands distant from political forces.
Their past claims have not always been correct.China declared that September 3rd would be a holiday to mark the 70th anniversary of Japan's surrender at the end of the second world war.
—Megan Carpentier The source: Key players in the Republican party like Texas governor Rick Perry have been calling for increased National Guard presence at the border, while the state's always-level-headed congressman Louie Gohmert declared that "we are under invasion".
