It is our follies that make our lives uncomfortable. Our errors of opinion, our cowardly fear of the world’s worthless censure, and our eagerness after unnecessary gold have hampered the way of virtue, and made it far more difficult than, in itself, it is.
Six mistakes mankind keeps making century after century: Believing that personal gain is made by crushing others; Worrying about things that cannot be changed or corrected;
Insisting that a thing is impossible because we cannot accomplish it; Refusing to set aside trivial preferences; Neglecting development and refinement of the mind;
Attempting to compel others to believe and live as we do.
Next time someone complains that you have made a mistake, tell him that may be a good thing. Because without imperfection, neither you nor I would exist.
I have no data yet. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.
Mistakes are, after all, the foundations of truth, and if a man does not know what a thing is, it is at least an increase in knowledge if he knows what it is not.
When men are most sure and arrogant, they are commonly the most mistaken, and have then given views to passion, without that proper deliberation and suspense which can alone secure them from the grossest absurdities.