The fundamental cause of trouble in the world is that the stupid are cocksure while the intelligent are full of doubt. (Bertrand Russell)

I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. (Umberto Eco)

C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do, it blows away your whole leg. (Bjarne Stroustrup)

Once is happenstance. Twice is coincidence. Three times is enemy action. (Auric Goldfinger, in Goldfinger by Ian L. Fleming)

Problems worthy of attack prove their worth by fighting back. (Paul Erdos)