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

You can avoid reality, but you cannot avoid the consequences of avoiding reality. (Ayn Rand)

There’s a limit to how many times you can read how great you are and what an inspiration you are, but I’m not there yet. (Randy Pausch)

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

Only two things are infinite, the universe and human stupidity, and I’m not sure about the former. (Albert Einstein)

I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use. (Galileo Galilei)