[People always told him to be careful, and he almost always ignored their warnings. Quite often to his own detriment. It's hardly different now.]

I shall bear that in mind then.

[Speaking of weaknesses...]

Actually, there is something. It might be useful knowledge to you too. They cannot cross running water. It might be as small as a stream but they have some irrational fear of it. It was one of the things the greatly helped us back then.