Recognize the workings of your mind. Man is called manishi. One with a mind (manas) is manishi. Man creates the world of his experiences with his mind. What is the mind? Only a bundle of thoughts. What are thoughts? They are actions of day-to-day life.
Therefore, the progress or decline of the world is dependent on the intentions and actions of individuals. The world is not inherently evil. In fact, evil does not exist in the world! The world does not have any sorrow! All sorrow and evil are created by us alone. We invite misery by entertaining bad desires. Maintain a pure mind all the time. As soon as you find amoral intentions surfacing, contemplate on God to nullify their effect. Do not recollect degraded feelings repeatedly and strengthen them, like you grow plants with water and fertilizer! Bhagawan Sri Sathya Sai Baba, Divine Discourse, June 1st 1991.