" Mind training is based on the idea that two opposite mental factors cannot happen at the same time. You could go from love to hate. But you cannot, at the same time – toward the same object, the same person – want to harm and want to do good. "
- Matthieu Ricard

In simple terms, this quote emphasizes that two opposing mental states cannot coexist simultaneously towards a single entity or person. For example, one cannot feel both love and hatred at the same time for the same individual; it's impossible to wish harm and do good concurrently toward someone. This concept highlights the exclusive nature of conflicting emotions.

The deeper meaning of this quote delves into the idea that our mental states shape our actions and perceptions. By understanding that certain thoughts are incompatible, we can work on cultivating positive mental factors. If one is struggling with negative feelings like resentment or anger towards another person, this awareness can serve as a catalyst for shifting those emotions to more constructive ones such as compassion or empathy. This shift requires mindfulness and deliberate practice in redirecting our thought patterns from harmful to beneficial ones.

Matthieu Ricard, the author of this quote, is a Tibetan Buddhist monk who is also known for his work as a translator and interpreter between the Dalai Lama and Western scientists. He has written extensively on topics such as ethics, compassion, and happiness, contributing significantly to the dialogue between Buddhism and modern psychology.