Ramana Maharshi - Is solitude necessary for vichara

Question : Is solitude necessary for vichara?
Ramana Maharshi : There is solitude everywhere. The individual is solitary always. His business is to find it out within, not to seek it outside himself. Solitude is in the mind of man. One might be in the thick of the world and maintain serenity of mind. Such a one is in solitude. Another may stay in a forest, but still be unable to control his mind. Such a man cannot be said to be in solitude. Solitude is a function of the mind. A man attached to desires cannot get solitude wherever he may be, whereas a detached man is always in solitude.