Compassion is not religious business, it is human business,
 it is not luxury, it is essential for our own peace and
 mental stability, it is essential for human survival. — Dalai Lama

Words, just like seeds, will flourish when given the best environment in which to grow. Likewise, a seed sown in poor soil may not grow at all. Conversations are much the same. If we truly want to be heard, then it works best if we create a listening in the other person to hear what we have to say. If we speak with moralistic judgement they may not hear what we are really trying to say. If we speak without compassion and empathy, then sometimes they may not hear us at all. Likewise, if we listen with moralistic judgements; if we listen without compassion and empathy then we may not hear the message that is being communicated. We require the filter of compassion and empathy in our listening to enable us to adequately interpret what is being said. Safely communicating our feelings and needs is part of the bigger process of acceptance, where we prepare the listener for the conversation we wish to have.

We often refuse to accept an idea merely because the tone of voice
in which it has been expressed is unsympathetic to us. — Nietzsche