So many people think they have a lock on truth: "Stay the course in Iraq" or "Say no to war in Iraq". As I sat in a coffee shop and watched the sky turn from sunny to cloudy to gray and back again, I thought the weather made a fitting metaphor for "truth", whatever that is,
The weather is not always either sunny or stormy. It changes from one partial state to another and then back. There may be big puffy clouds, there may be a gray overcast from horizon to horizon, or there may be gray with slits of blue. And if you go a few dozen miles away, the weather may be completely different.
So it is with "truth". "Truth" shifts with conditions and with our knowledge. What we believed true yesterday may not be so today because many things have happened since yesterday. What we believed true yesterday may not seem so today because we have learned something new to us.
Always be wary of those who say they have the "truth". No one knows everything and the "truth" proclaimers may not have some crucial facts or may not be thinking about the issue from other perspectives.