The world is a very complicated place, and it's not always easy to understand what's happening around us.

The more we learn of the true nature of non-human animals, especially those with complex brains and corresponding complex social behaviour, the more ethical concerns are raised regarding their use in the service of man—whether this be in entertainment, as ‘pets,’ for food, in research laboratories or any of the other uses to which we subject them.

The greater the obstacle， the more glory in overcoming it.

The most damaging phrase in the language is: 'We've always done it this way.'