“Hence, in all countries the chief occupation of society is card-playing, and it is the gauge of its value, and an outward sign that it is bankrupt in thought. Because people have no thoughts to deal in, they deal cards, and try and win one another’s money. Idiots!”

“A book can never be anything more than the impress of its author's thoughts; and the value of these will lie either in the matter about which he has thought, or in the form which his thoughts take, in other words, what it is that he has thought about it.”

“A constant flow of thoughts expressed by other people can stop and deaden your own thought and your own initiative…. That is why constant learning softens your brain…. Stopping the creation of your own thoughts to give room for the thoughts from other books reminds me of Shakespeare’s remark about his contemporaries who sold their land in order to see other countries.”

“Rascals are always sociable, and the chief sign that a man has any nobility in his character is the little pleasure he takes in others company.”

“There is one thing that, more than any other, throws people absolutely off their balance — the thought that you are dependent upon them. This is sure to produce an insolent and domineering manner towards you. There are some people, indeed, who become rude if you enter into any kind of relation with them; for instance, if you have occasion to converse with them frequently upon confidential matters, they soon come to fancy that they can take liberties with you, and so they try and transgress the laws of politeness. This is why there are so few with whom you care to become more intimate, and why you should avoid familiarity with vulgar people. If a man comes to think that I am more dependent upon him than he is upon me, he at once feels as though I had stolen something from him; and his endeavor will be to have his vengeance and get it back. The only way to attain superiority in dealing with men, is to let it be seen that you are independent of them.”

“As the biggest library if it is in disorder is not as useful as a small but well-arranged one, so you may accumulate a vast amount of knowledge but it will be of far less value to you than a much smaller amount if you have not thought it over for yourself; because only through ordering what you know by comparing every truth with every other truth can you take complete possession of your knowledge and get it into your power.”

“We will gradually become indifferent to what goes on in the minds of other people when we acquire a knowledge of the superficial nature of their thoughts, the narrowness of their views and of the number of their errors. Whoever attaches a lot of value to the opinions of others pays them too much honor.”