"A pure mind is steady and stable mind free from thoughts and vibrations."----Sri Sri Babathakur

Sri Sri Babathakur who is none else but a Tattvabetta incurnation of The Divine Himself. ( A Tattvabetta incernation is the rarest of the rare incurnations of the Godhead-Absolute; Who out of deep compation for mankind caters the supreme wisdom or Knowledge-Absolute to the world for helping the true seeker of complete upliftment or redeemtion of nature i.e. from sub-human to human and then from human to divine by listening and following the words of the the Tattvabetta with utmost sinceriety, devotion and dedication.) He being a tattvabetta of the present time is focusing the light of Knowledge of Knowledge as required by and is appropriate for the true seeker of Peace-Absolute, Knowledge-Absolute and Love-Absolute, of the present time.
He is saying that a pure human mind is a steady and stable mind, which is free from thoughts and vibrations. Mind is often compared with an ocean by Sri Sri Babathakur for helping man to understand how mind functions and how to control the wayward motions of mind, for achieving Absolute-Peace, Absloute-Knowledge and Absolute-Love and thus realize Absloute-Bliss in the present time pandemonium in human society. This He compares with regaining our lost paradise. Lost in the oblivion of our Absolute-Nature, True-Nature i.e. Peace/Bliss/Love-Absolute.
He says desire for any object is the root cause for peacelessness. A desire free mind can never be peaceless. Metaphorically, He says, a desire free mind is like a placid, tranquil ocean surface. If, somehow a wind of desire blows, on the placid ocean surface a ripple forms and thus with the ruffling of the ocean surface ripples begin to form and thus the placidity and tranquility of the ocean surface is lost.
Therefore, to be peaceful desire have to be shunned. Desire of mind and peace are inversely proportional. The moment one increases the other is bound to decrease proportionately.