The phrase "stick to the principles" is correct and usable in written English.
You can use it to express the idea of commitment to a set of core ideas or values. For example, "We must always stick to the principles that have been established for our organization."
"We stick to the principles that decisions should be taken in NATO," he said.
Some Democrats, including the Senate majority leader, Harry Reid, have voiced concern over plans to build the Islamic center, while Republicans like Mr. Hatch insist that the government stick to the principles of religious liberty for which the law stands.
"What we want is to keep the gallery open and stick to the principles it had when it was founded, which is as a place for art that is open to all.
So if somebody can help me along on private property ownership in solving these problems, I'm very open to that and I don't pretend to know the exact details of how to do it because to me the government has been the source of so much of our problems but I still want to stick to the principles of private property ownership with minimum if no government regulation.
"When I'm in a relationship I'm diligently monogamous and stick to the principles agreed on within that relationship.
I would add that if they don't stick to the principles they profess to hold and stand up to the lobbyists they've kowtowed to from the start, "holding power" won't be anything they have to worry about.
We wanted to stick to the principle of keeping interactions light and focused.
But I do believe that we must stick to the principle that you are innocent until proven guilty".
As a human rights defender, I stick to the principle that we need a mass civil standing, peaceful civil resistance which would lead to changes in the society.
But he added: "I think it is right to stick to the principle that we shouldn't be encouraging people to make this dangerous journey.
Nevertheless, Lopate would have done better to stick to the principle that brevity, up to the point where compression collapses, invariably carries more implication than expansiveness ever can.
