This might be deemed a fallacy, but it might just be a generalized statement that might be truthful in some case, and false in others. Thus, it can lead to all sorts of error unless qualified in a truthful, biblical way. Like the other fallacies, this saying is nowhere to be found in the Bible. It is attributed to Mahatma Gandhi of India, a non Christian, so that should be the most obvious reason we should suspect the Christian truthfulness of this statement. However, St. Augustine taught something similar to this hundreds of years before Gandhi was even born – Cum dilectione hominum et odio vitiorum, which translates to “Love all mankind, but maintain a hatred of their sins”, which is found in The Rule of St. Augustine . Now in all fairness to this saying, there are some Scriptures that relate to this saying somewhat like:

“And of some have compassion, making a difference: And others save with fear, pulling them out of the fire; hating even the garment spotted by the flesh.” Jude 1:22-23 (KJV)

I think the problem with this saying is the broad-brushed way it deals with sin and the sinner, and the use of the word, love. This saying is commonly used in churches that openly embrace people living in sin, as a way to avoid the Christian duty to expel (excommunicate or dis-fellowship) so-called Christians living an unrepentant life of continuous sin (1Cor 5: 1-13). Another problem with this statement is that it may encourage Christians to focus on the sins or faults of others in a judgmental or condescending way, which would be a form of self-righteousness.