“Repentance for one's evil deeds is the safeguard of life.”

“Such is life, here today, gone tomorrow! Nothing goes with one, except one's merit and demerit; good and evil deeds follow one even after death.”

“People see only their good deeds saying, "I have done this good deed." But they do not see their evil deeds saying, "I have done this evil deed" or "This is called evil." But this (tendency) is difficult to see. One should think like this: "It is these things that lead to evil, to violence, to cruelty, anger, pride and jealousy. Let me not ruin myself with these things."”

“Men loved darkness rather than light, because their deeds were evil. For every one that doeth evil hateth the light, neither cometh to the light, lest his deeds should be reproved.”

“If any one bear evil, let it be
Without disgrace, sole profit to the dead;
On base and evil deeds no glory waits.”

“When our Lord and Master Jesus Christ said, "Repent," he willed the entire life of believers to be one of repentance.”

“There is no refuge from memory and remorse in this world. The spirits of our foolish deeds haunt us, with or without repentance.”

“Prolific truly is the impious deed;
Like to the evil stock, the evil seed.”

“If you do a good act, it cancels the effects of your evil deeds. If one prays, takes the Name of God and thinks of Him, the effects of evil are cancelled.”

“Then I (al- Sadiq) asked him (the thief) about his act. He said: 'perhaps, you are Ja'far b. Mohammed?' 'Yes,' I said. He said to me:'What does your noble origin avail you while you are ignorant?' 'Which verse of the Quran am I ignorant at?' I asked. He said these Words of Allah, the Great and Almighty:Whoever brings a good deed, he shall have ten like it, and whoever brings and evil deed he shall be recompensed only with the like of it.(Quran, 6:160) 'When I stole the two loaves of bread, they were two evil deeds. And When I stole the two pomegranates, they were two evil deeds, too. So these are four evil deeds. When I gave each one of them as alms, Allah has subtracted 4 evil deeds from 40 good deeds. So, I have 36 good deeds.' I (al- Sâdiq) said: 'May your mother loses you! It is you who are ignorant at the Book of Allah. Have you not heard that Allah said: (Allah) accepts-(deeds) from the pious only.(Quran, 5:27) When you stole the two loaves of bread, they were two evil deeds. And when you stole the two pomegranates, they were two evil deeds, too. And when you gave them to other than their owner without the permission of their owner, you have added four evil deeds to the four evil deeds, and you have not added four evil deeds to forty good deeds. So, he began looking at me. Then I left him and went away.”