Doubt is an uneasy and dissatisfied state from which we struggle to free ourselves and pass into the state of belief; while the latter is a calm and satisfactory state which we do not wish to avoid, or to change to a belief in anything else.
All the evolution we know of proceeds from the vague to the definite.
Every new concept first comes to the mind in a judgment.
The essence of belief is the establishment of a habit; and different beliefs are distinguished by the different modes of action to which they give rise.
It is impossible not to envy the man who can dismiss reason, although we know how it must turn out at last.