He through whom the world is not agitated, and who is not agitated by the world, who is free from joy and anger and fear and agitation, he too is dear to me.
यस्मान्नोद्विजते लोको लोकान्नोद्विजते च यः। हर्षामर्षभयोद्वेगैर्मुक्तो यः स च मे प्रियः॥
Bhagavad Gita 12.15
The same idea in other traditions
Depart from evil, and do good; Seek peace, and pursue it.
Blessed are the peacemakers: for they shall be called the children of God.
As a solid rock is not shaken by the wind, wise people falter not amidst blame and praise.
The Master said, "The superior man is satisfied and composed; the mean man is always full of distress."
To a monk who has left his sons and wives, and who has ceased to act, nothing pleasant can occur, nor anything unpleasant.
One who does not frighten anyone, and who is not afraid of anyone else - says Nanak, listen, mind: call him spiritually wise.
And the servants of (Allah) Most Gracious are those who walk on the earth in humility, and when the ignorant address them, they say, "Peace!";
Thou hast come to draw men to union with me, / Not to drive them far away from me. / So far as possible, engage not in dissevering; / 'The thing most repugnant to me is divorce.' …
There is the great Mass (of nature);--I find the support of my body on it; my life is spent in toil on it; my old age seeks ease on it; at death I find rest in it;--what makes my life a good makes my death also a good. …