"tranquil mind" is a correct and usable phrase in written English.
It means a calm or peaceful state of mind. It can be used to describe someone who is mentally calm and composed, or to describe a state of serenity or tranquility. An example sentence could be: "After she finished her yoga practice, she felt a sense of peace and had a tranquil mind."
"Farewell the tranquil mind" has never sounded like such a dangerous and irrevocable leave-taking.
When he famously bids farewell to the "tranquil mind" and martial glory, it's as if he's saying goodbye to expense account lunches at "21".
In times like these, nothing — nothing at all — is more important than taking care of yourself and on focusing on what really matters: Health, hope, love and a tranquil mind".
True perfection is a tranquil, equanimous mind in the face of challenges.
A single little spike gets me to work in a tranquil frame of mind that no amount of metropolitan vexation can sully.
The property seems designed to help its owners enter a tranquil state of mind.
Miku's technology and corresponding app work with smartphones from anywhere in the world and sends instant alerts when it matters most, giving parents a tranquil peace of mind.
Certainly, there are unhappy people who go under the knife because they think it will help them acquire friends, lovers, social acceptance, a job or a tranquil state of mind.
All this spins through my mind on tranquil mornings as the D train trundles between 36th Street and Atlantic Avenue and bored commuters check their phones.
In my case it's been 10 woozy, pill-popping days in hospital having a knee replacement (with Geoffrey Grigson's great, final anthology The Faber Book of Reflective Verse to carry me away from groaning 3am wards to tranquil places in the mind) followed by weeks with physios, crutches, Zimmer frames, sticks, rollators and oxygen.
Schopenhauer's conception of moral awareness coheres with his project of seeking more tranquil, transcendent states of mind.
