Perhaps the perception of the one who was there is the only truth that matters.

"But the only truth I know at the moment is that someone blew up your ships, and it was not us."

The understanding that his was not the only truth had come slowly.

The things he had always thought were the only truths in the world weren't, not here anyway.

He says that what they experienced in Virginia was not a dream but instead "the only truth."

A short answer, but the only truth I could affirm.

Still, he said, it is "not the only truth that must be considered."

But after thirty pages it seemed like the only truth in the world.

That was the only truth she did have at the moment.

His meeting with the fairies had been the only truth.