hello and

brothers and sisters.
It is not about who has the truth or not, in the sense that because i am me, than i must be right, or it isn't that because
i follow islam, than it must be right. (I know that it is). It is rather that we, as muslims
know that Islam is the truth because it has been divinley inspired by Allah, through his Prophet Muhammad (salalahu aleyhi wa salam). The quran has not been distorted over the centuries, and people have not changed it to how they want, and thus teaching others by what
they think is right, yes, there are a few misguided people who have deviated, and have had followers, however the point is, is that the one unique thing about truth is that it never changes, and this is how you know what the truth is.
Let me give you a comparison. A murder, for example takes place. No matter if the detectives/investigaors cannot gather enough evidences to convict a person, does not negate the fact that x person commited the murder. in other words, person x will always be that murderer no matter what evidences may (or may not) be apparent.
and no, grace seeker, i have to disagree with you on the point you raised concerning our differences, in that you said that Our differences come more from our minds than our hearts.
i believe the opposite, because the human
mind will always be rational, when somehting has been exaplined properly. However, it is dependent on what that person understands. For example when something is explained to some one, eg a math problem, a person who understands math, will obviously understand the problem. It has nothing to do with what he believes, because the person explaining, let us assume that it is a teacher, will show his student, what are the necessary steps to acheive the correct answer. He, as a student cannot dispute with that, based on what his heart believes as 1: he has been shown through a logic what he has to do to achieve the correct answer and 2: because otherwise, he cannot acheive the correct answer.
it is however, a sickness in the heart that people will not accept truth, because our hearts tend to be deceived.