Truth is sought for its own sake. And those who are engaged upon the quest for anything for its own sake are not interested in other things. Finding the truth is difficult, and the road to it is rough.
A key figure in development of the scientific method.
[I mention this because I suspected an anti-gun person was completely clueless as to how to distinguish truth from falsity. I was right. It is a very, very common problem–especially among anti-gun people. Asking them to explain how they determine what is true from false gets a blank stare and/or indignation without a valid response every single time I have tried it.