It is astonishing with how little wisdom mankind can be governed, when that little wisdom is its own.
As tempting as it seems to wear tennis shoes with your tux, don't do it. I think it looks ridiculous. If you're 14 years old, maybe give it a shot. In general, don't portray anything that says 'I'm too cool and I don't care.'
I thought about that the other day after I went to the grocery store and had to sign fifteen autographs before leaving. On one hand, it's just so flattering. On the other hand, sometimes it would be nice to get the bread and leave, you know?