I once thought I should have liked to have been a king amongst money changers, and own railroad and steamship lines, and dominate men by sheer power.
I've come to see that that our failure hasn't been as much your fault as I once thought, as much as you yourself declare.
I once thought I could stand alone, that I had solved all problems for myself, but I know now how foolish I was.
I don't know why marriage should suddenly have become such a mockery and failure in our time, but I know that it is, that ours hasn't been such an exception as I once thought.
I once thought it should be read, O that all were, as all would seem to be.
I once thought it should be inquisition, but the present reading is probably right.
I was then frugal of my mirth] By breaking this speech into exclamations, the text may stand; but I once thought it must be read, If I was not then frugal of my mirth.
During all question of the gentle truce] I once thought to read, During all quiet of the gentle truce.
I once thought it should be read, you into him; but, perhaps, it is a familiar phrase, like do me this.
And all to all] I once thought it should be hail to all, but I now think that the present reading is right.
He once thought to follow him and beg his pardon; but the contempt with which he had been treated, more than all the anger, with-held him.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "once thought" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.