Don't try to sound profound

It is not difficult to make easy things appear hard, but to render hard things easy is the hardest part of the work of preachers.

- Archbishop James Ussher

On the Lord's Supper

I would rather drink blood with a papist than mere juice with the Zwinglians.

- Luther, after Marburg in 1530

when tradition is wrong

Custom should yield to truth.

- Zwingli