Obvious

The aspects of things that are most important for us are hidden because of their simplicity and familiarity. We fail to be struck by what, once seen, is most striking and powerful.  Wittgenstein

When the Master (Huang-po) had taken his place in the assembly hall, he began: "You people are just like drunkards. I don't know how you manage to keep your feet in such a sodden condition. Why, everyone will die of laughing at you. It's all so easy."

It is easier to see who you are than to see a gooseberry in the palm of your hand. Ramana Maharishi  

Turmoil in your hearts
Were it not for
the excess of your talking
and the turmoil in your hearts,
you would see what I see
and hear what I hear!
Ibn Arabi
(From The Mystics of Islam, translated by Reynold A Nicholson)