The Second Rule is that the greatest harm can result from the best intentions. It sounds a paradox, but kindness and good intentions can be an insidious path to destruction. Sometimes doing what seems right is wrong, and can cause harm. The only counter to it is knowledge, wisdom, forethought, and understanding the First Rule. Even then, that is not always enough.

Once lucky, twice confident, and thrice dead.

If the road is easy, you're likely going the wrong way.

There is nothing that exists that has only one side. Even a piece of paper, thin as it is, has two sides.

We can't live our lives according to what might have been. We have to live by what is.

Every person's life is theirs by right. An individual's life can and must belong only to to himself, not to any society or community, or he is then but a slave.

...Wizard's Fifth Rule: Mind what people do, not only what they say, for deeds will betray a lie.