doubt your sanity (=think you may be mentally ill) I was beginning to doubt my own sanity. 怀疑精神是否正常

keeplose your sanity (=remainnot remain in good mental health) Poulton knew that if he wanted to keep his sanity he would have to escape. 保持/失去健全的心智

The manager had tried hard to bring sanity to the situation. 经理竭力想让局面变得合情合理。