Truth

If anything falls down it's because it has to.
If anything that fell down is necessary, it has to be settled up again.

A problem that is often debated is what the truth could be, what's its possibility and if it really worths the effort to enlighteen us in this question.

This is not just a philosophical question, it steems for our self-confidence, it results in our possibility of being, in the reliability in our purpose as specie, in the trust in ourselves.

Of course is not mandatory to justify the validity of our thinking for to keep going in daily basis, nay it won't stop our development and the succesful scientific and technological research. Facts rule and we can predict facts, so we can control and catch the outer. It's the intended goal.

But further, there are a bunch of questions which aren't susceptibles of being verified by practical experimentation, they are beyond the univers of science and the must be answered. Truthfully.