If passion drives you, let reason hold the reins.

He is no clown that drives the plow, but he that doth clownish things

Hear reason, or she'll make you feel her.

Anger is never without reason, but seldom a good one.

Here comes the Orator! with his Flood of Words, and his Drop of Reason

He that by the plough would thrive, himself must either hold or drive