Just for a moment, he even stopped doubting and said, "If we can keep on like this, sir, I think we'll do fine.
I stopped doubting whether he believed what he was saying.
So when did Alberich stop doubting and start trusting?
I have long ago stopped doubting that you were the Eternal Apprentice.
"I don't know when people are going to stop doubting us," he said.
So the place at which a person stops doubting is a matter of his private preference and with many people this is entirely arbitrary.
He paused, and then he said, 'I don't think I'll ever stop doubting.
A week later Jesus appeared and told Thomas to touch Him and stop doubting.
He was going to stop backtracking and doubting his own sanity.
As soon as we stop questioning and doubting, that's when the heart of scientific education will have disappeared.