Hawzah News Agency – Tanbih al-Khawatir:

لَمّا قيلَ لِعيسى‏ عليه السلام: مَن أدّبَكَ؟ - : ما أدّبَني أحَدٌ، رأيتُ قُبْحَ الجهلِ فجانَبْتُهُ.

Jesus Christ (AS) was asked, 'Who gave you good manners?' He replied, 'No one disciplined me; when I saw the ugliness of ignorance I avoided it.'

Source: Tanbih al-Khawatir, v. 1, p. 196