Today the field I write about is the mind.
The wheat represents good knowledge - the stuff we learn in classes, from God's Word, from those we trust, love, and admire, etc..
The tares are of course the antithesis of the wheat.
A couple nights ago I found out that someone had sown a tare in the mind of a friend. In the course of ordinary conversation about the weather we've been having, a statement was made about how thunder is caused by the clouds bumping into each other. I could not believe what I heard! I had to scoop up my chin, pull extremely hard on my ears to retract my eyeballs back into their sockets, and shake the water off my pants from where I fell over into a puddle.
That statement was right up there with the sky being blue from sunlight reflecting off the ocean. I thought everyone knew that thunder was caused by a sudden downpour nearby - all that rain hitting the ground at once can get loud! :) No, really, I'm kidding. Please don't believe that either. :)
While I tried not to laugh and embarrass my friend totally, I have to admit that was one very large tare that had been sown in the mind of this person. While the Bible parable has the servants leave the tares and separate them when the harvest time comes, I instead chose to go ahead and enlighten my friend.
Make sure you are responsible for sowing wheat in the minds of those who look up to you. You'd be surprised to know how long a tare seed can grow. :)