Thinking too little about things or thinking too much both make us obstinate and fanatical. - Blaise Pascal

Man's grandeur is that he knows himself to be miserable.

For, after all, what is man in nature? ...a middle point between all and nothing...What else can he do, then, but perceive some semblance of the middle of things, eternally hopeless of knowing either their principles or their end? All things have come out of nothingness and are carried onwards to infinity. Who can follow these astonishing processes? The author of these wonders understands them: no one else can.

People often mistake their imagination for their heart, & so often are convinced they are converted as soon as they start thinking of becoming converted.