Passion like fire can be a dangerous thing. I used to think that all you need is passion to succeed. That is such a romantic view - I use the word romantic in the classic sense of the word- not connected with eros.
Passion and Pride - twin sisters. A lethal combination. Both encourage each other. Both spur each other on. Their older sister, Prudence or wisdom is somewhere in the background- shouting out advice. But without her in charge, they can do whatever they like.
They can do spectacular things. But without Prudence's sound advice, their plans are doomed to failure.