This world is like a mountain. Your echo depends on you. If you scream good things, the world will give it back. If you scream bad things, the world will give it back. Even if someone says badly about you, speak well about him.

Change your heart to change the world

Shams-i Tabrīzī, 1185 – 1248 Shams-i Tabrīzī, Persian Shafi’ite poet, credited as the spiritual instructor of Rumi