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

An inconvenience is only an adventure wrongly considered; an adventure is an inconvenience rightly considered. (Gilbert Keith Chesterton)

Against stupidity, the gods themselves contend in vain. (Friedrich von Schiller)

A lie gets halfway around the world before the truth has a chance to get its pants on. (Sir Winston Churchill)

The artist is nothing without the gift, but the gift is nothing without work. (Emile Zola)