To be an environmentalist is to care about the environment and care about life on planet Earth.

If it were possible to live without causing harm to any living being at all, then indeed we might well choose not to eat carrots or other vegetables. But that is not possible - merely by being alive, we necessarily cause harm to many, many beings: we step on them inadvertently, we breathe them in without noticing, we kill them when we brush our teeth or wash our bodies, etc.

As humans, we do get to choose what we eat, and when we choose to eat a plant, we are eating (i.e., harming) just that plant, plus indirectly whatever nutrients that plant consumed over its lifetime (and we are also harming whatever beings may have been living on that plant or who were injured or killed in the harvesting process). But when we eat an animal, we are eating not just that animal, but also indirectly all of the plants and other beings that that animal ate over its lifetime - those plants became the flesh that we eat.

Fish are complex beings who choose mates, use words to communicate, build nests, cooperate with one another to find food, have long-term memories, and use tools.

Human overconsumption is a greater problem than human population growth, and meat eating is a big part of that problem.

Whatever you want to have happen to you make it happen for others now and eventually but inevitably you will reap the seeds you have sown.

Be a communicator, not a self-righteous proselytizer or preacher. Many people are only concerned with expressing themselves, which isn't necessarily communication.