In the early years of the Church, Justin Martyr expressed the proper 'Christian' attitude 

Justin First Apology - 
“Reason directs those who are truly pious and philosophical to honour and love only what is true, declining to follow traditional opinions, if these be worthless. For not only does sound reason direct us to refuse the guidance of those who did or taught anything wrong, but it is incumbent on the lover of truth, by all means – even if death be threatened, even before his own life – to choose to do and say what is right.”

This attitude should be the first of our “Traditional Doctrines” in the Church.

The Spirit can only 'reveal' the amount of 'truth' that humanity, individually and collectively, is able to comprehend at any given time. It's the rule expressed by St Paul – 'when I was a child, I thought as a child; when I grew, I learned to think as an adult'.

If we cannot grow in knowledge, we will never attain 'the fullness of truth' - there is always more to learn!