Hawzah News Agency – The commander of the faithful, Imam Ali peace be upon him says:

مَن لَم يَحسُنْ ظَنُّهُ استَوحَشَ مِن كُلِّ أحَدٍ.

 ‘The one who does not think well of people will remain alienated from everybody.’

Source: Ghurar al-Hikam, no. 9084