A Voice from the Past - Chesterton

But what we suffer from to-day is humility in the wrong place. Modesty has moved from the organ of ambition. Modesty has settled upon the organ of conviction; where it was never meant to be. A man was meant to be doubtful about himself, but undoubting about truth; this has been exactly reversed. Nowadays the part of a man that a man does assert is exactly the part he ought not to assert - himself. The part he doubts is exactly the part he ought not to doubt - the Divine Reason.

G. K. Chesterton, 1874-1936, Orthodoxy,  III. The Suicide of Thought (Dover Publications, 2004, p. 23)

Is this helpful in explaining our world today? How should we respond to it?