The imperfect eye beholds imperfections.

 Therefore, arise in the utmost power. Be in perfect unity. Never become angry with one another. Let your eyes be directed toward the kingdom of truth and not toward the world of creation. Love the creatures for the sake of God and not for themselves. You will never become angry or impatient if you love them for the sake of God. Humanity is not perfect. There are imperfections in every human being, and you will always become unhappy if you look toward the people themselves. But if you look toward God, you will love them and be kind to them, for the world of God is the world of perfection and complete mercy.

Therefore, do not look at the shortcomings of anybody; see with the sight of forgiveness. The imperfect eye beholds imperfections. The eye that covers faults looks toward the Creator of souls. He created them, trains and provides for them, endows them with capacity and life, sight and hearing; therefore, they are the signs of His grandeur. You must love and be kind to everybody, care for the poor, protect the weak, heal the sick, teach and educate the ignorant.

`Abdu'l-Bahá: The Promulgation of Universal Peace