Innocence is indeed a glorious thing; but, unfortunately, it does not keep very well and is easily led astray.

It is the Land of Truth (enchanted name!), surrounded by a wide and stormy ocean, the true home of illusion, where many a fog bank and ice, that soon melts away, tempt us to believe in new lands, while constantly deceiving the adventurous mariner with vain hopes, and involving him in adventures which he can never leave, yet never bring to an end.

Genius is the ability to independently arrive at and understand concepts that would normally have to be taught by another person.

Prudence reproaches; conscience accuses.

Human beings are never to be treated as a means but always as ends.

Laziness and cowardice explain why so many men. . . remain under a life-long tutelage and why it is so easy for some men to set themselves up as the guardians of all the rest. . . If I have a book which understands for me, a pastor who has a conscience for me, a doctor who decides my diet, I need not trouble myself. If I am willing to pay, I need not think. Others will do it for me.

With men, the state of nature is not a state of peace, but war.