Because the person in the Aquarian symbol is shown pouring liquid from a jug, some people conclude that Aquarius must be a water sign. In fact though, the water is symbolic, representing nectar drawn from the fountain of inner wisdom. Aquarius is an air sign. It's mission, and therefore yours is to enlighten and inform.
Most people form their opinions from a 'gut reaction'.
First they 'feel' something, then they rationalise their experience. For Aquarians, this process works in reverse. Thus, most of the time, these people are cool and level headed. Their feelings are strong and deep, but it takes a lot to stir them up. They reserve their tears and temper for the defence of a utopian vision.