The world is full of suffering, but it is also full of the overcoming of it.
This quote was in an 3-part essay Helen Keller originally wrote when she was only 23 entitled "Optimism." The full passage reads, "Although the world is full of suffering, it is full also of the overcoming of it. My optimism, then, does not rest on the absence of evil, but on a glad belief in the preponderance of good and a willing effort always to cooperate with the good, that it may prevail. I try to increase the power God has given me to see the best in everything and every one, and make that Best a part of my life."