A man lives by believing something; not by debating and arguing about many things. A sad case for him when all that he can manage to believe is something he can button in his pocket, and with one or the other organ eat and digest! Lower than that he will not get.
 Thomas Carlyle, On Heroes, Hero-Worship, and The Heroic in History (1841). copy citation

Context

“That a man parade his doubt, and get to imagine that debating and logic (which means at best only the manner of telling us your thought, your belief or disbelief, about a thing) is the triumph and true work of what intellect he has: alas, this is as if you should overturn the tree, and instead of green boughs, leaves and fruits, show us ugly taloned roots turned up into the air,—and no growth, only death and misery going on!
For the Scepticism, as I said, is not intellectual only; it is moral also; a chronic atrophy and disease of the whole soul. A man lives by believing something; not by debating and arguing about many things. A sad case for him when all that he can manage to believe is something he can button in his pocket, and with one or the other organ eat and digest! Lower than that he will not get. We call those ages in which he gets so low the mournfulest, sickest and meanest of all ages. The world's heart is palsied, sick: how can any limb of it be whole? Genuine Acting ceases in all departments of the world's work; dexterous Similitude of Acting begins.” source