Assess the valence intensity of the tweeter's emotional state given the tweet: "What terrible thing to see and have no vision-\n\nHelen Keller-\n\n-Begin with the end in mind-\n\nStephen Covey-\n\n #whereareugoing". Provide a numerical score ranging from 0 to 1, where 1 signifies highly positive and 0 indicates highly negative.
0.426