Thomas Hobbes

"Art is the unnatural, nature is the work of time."

"The memory of the past and the hope of the future are the sources of all wisdom."

"The desire of man for learning is an endless pursuit."

"A man's happiness depends upon the knowledge of eternal truths."

"The virtue of a covenant lies in the mutual obligation it creates."

"Every deliberation concerning an action to be done is called counsel."

"The security of a person requires the security of the state."

"Silence is sometimes an argument of consent."

"The natural condition of mankind is a war of all against all."

"Covenants being made by men themselves are made to serve men's purposes."

"Authority is necessary for the preservation of society."

"The principal use of strength is in the preservation of peace."

"Man is made fit for society by the fear of death."

"The most certain sign of wisdom is cheerfulness."

"Prudence is the virtue of knowing what to do and when to do it."

"Injustice is the violation of covenant."

"The right of nature is the liberty each man hath to use his own power as he will himself."

"The desire of reputation is the desire of making others love us."

"Time hath too much credit given to it in the world."

"The human mind is naturally curious and seeks understanding."

"Sovereignty must be perpetual and absolute."

"Men are by nature competitive and ambitious."

"The fear of oppression leads men to unite under government."

"A promise is an act of will whereby one obligates oneself to another."

"The understanding of consequences makes men prudent."

"Felicity is a continual progress of the desire from one object to another."

"The commonwealth is nothing else but the persons united."

"Truth is the first casualty of war."

"The appetite of man is perpetual want."

"Freedom is the absence of impediments to action."