“There is a great deal of human nature in people.”
Mark Twain
“Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe.”
Albert Einstein
“Human action can be modified to some extent, but human nature cannot be changed.”
Abraham Lincoln
“The only thing that one really knows about human nature is that it changes. Change is the one quality we can predicate of it. The systems that fail are those that rely on the permanency of human nature, and not on its growth and development. The error of Louis XIV was that he thought human nature would always be the same. The result of his error was the French Revolution. It was an admirable result.”
Oscar Wilde
“The basic rule of human nature is that powerful people speak slowly and subservient people quickly -because if they don't speak fast nobody will listen to them.”
Michael Caine
“The more one analyses people, the more all reasons for analysis disappear. Sooner or later one comes to that dreadful universal thing called human nature.”
“Slavery is also as ancient as war, and was as human nature.”
Voltaire