In Atma Bodha by Swami Chinamayananda, a wonderful guru in the grand tradition of Advaita Vedanta (the perception of non-duality), the following passage appears:
"...even a man of intelligence, when vexed with some worry, cannot think properly or understand easily. His power of understanding or thinking is clouded when the mind is disturbed."
All the wise men have advised to stay calm in all the circumstances. Calmness is our innate quality and it is during calmness, our mind works with highest efficiency and can give us the way out of the toughest situations.
Enjoy the greatest wisdom on Calmness in this video.
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