"cause to work" - Translation from English to Arabic

I don't know if you've had much cause to work with scientists. Difficult people by nature.
لا أعرف لمَ تحبّ العمل مع العلماء فهم أناس معقّدون بطبيعتهم

and on that vice in him will my revenge find notable cause to work.
هو شيطان أحمق يلقي بحكمه على الناس