IN a voyage, for instance, casting my eyes down upon the ocean below, and looking round me and seeing no land, I am out of my wits, and imagine that if I should be shipwrecked I must swallow all that ocean; nor doth it once enter my head, that three pints are enough to do my business. What is it then that alarms me? The ocean? No, but my own principle. Again, in an earthquake, I imagine the city is going to fall upon me; but is not one little stone enough to knock my brains out? What is it then that oppresses and puts us out of our wits? Why, what else but our principles?
EPICTETUS. DISCOURSES. Book ii. §16. ¶3.