Thinking is easy, acting is difficult, and to put one's thoughts into action is the most difficult thing in the world.
Johann Wolfgang von GoetheIf the world does improve on the whole, yet youth must always begin anew, and go through the stages of culture from the beginning.
Johann Wolfgang von GoetheFor the butterfly, mating and propagation involve the sacrifice of life, for the human being, the sacrifice of beauty.
Johann Wolfgang von Goethe