"It is the mark of an educated mind to be able to entertain a thought without accepting it."
~Aristotle
I'm a philosopher, and this is one of those overarching quotes on philosophy that demonstrates its greatness. I have read many other philosophical quotes, and I figured I would begin with one of the great overarching ones.
I'm also a lover of fine literature (I'm also a writer myself), and Dostoevsky is one of my favorite writers. Here's a quote from Crime and Punishment that I particularly like:
“It takes something more than intelligence to act intelligently.”
~Fyodor Dostoevsky
Humanity's greatest evils have required great intelligence. They lack the morality that one would hope society would be able to retain in the face of the few individuals who cause them. In other words, when humans lose humanity, they become worse than anything else in nature. (Yes, I do mean that dual-meaning of "nature" there.)
Here are some other quotes that I like:
“Existence precedes and commands essence.” ~Jean-Paul Sartre (I actually have this quote on a T-shirt [in the original French.])
“Three o’clock is always too late or too early for anything you want to do.” ~Jean-Paul Sartre (When I read this quote in Nausea, I immediately understood and identified with it.)
"The tension between being relevant and being rational, between immediacy and mediation, between participation and spectatorship, is the oldest problem in philosophy." ~Richard Rorty (This quote is fascinating due to its deceptively simple phrasing, and whether or not this is indeed the "oldest problem in philosophy," the idea is a significant one for philosophy in general.)
“Conscience, my dear, is a kind of stick that everyone picks up to thrash his neighbor with, but one he never uses against himself.” ~Honore de Balzac (My favorite French fiction writer.)