What is the single most important similarity among history's different scien

Question: What is the single most important similarity among history's different scientists/philosopfers!?
Best Answer - Chosen by Asker:

They care about truth beyond the obvious!.Www@QuestionHome@Com

They can all spell "philosophers" intelligently!.Www@QuestionHome@Com

Curiosity!. And a driving urge to do something about it!.Www@QuestionHome@Com

They thought, therefore they were!.Www@QuestionHome@Com

They all had enquiring minds, and were probably born before their time!.Www@QuestionHome@Com

curiosityWww@QuestionHome@Com

There is a Creator!.Www@QuestionHome@Com