Although he had been much interested by Sergey Ivanovitch’s views of the new epoch in history that would be created by the emancipation of forty millions of men of Slavonic race acting with Russia, a conception quite new to him, and although he was disturbed by uneasy wonder at being sent for by Kitty, as soon as he came out of the drawing room and was alone, his mind reverted at once to the thoughts of the morning.
There are no more uses of "revert" in the book.
Show samples from other sources
When registering disapprobation, he always reverted back to her childhood nickname.
Harper Lee -- Go Set a Watchman
Andie had reverted to her old cheery self after Amy returned.