Life without death and happiness without misery are contradiction and neither can be found alone, because each of them is a different manifestation of the same thing.
Swami VivekanandaWe find the vast majority of people in every country believing that there will be a time when this world will become perfect, when there will be no disease, nor death, nor unhappiness, nor wickedness. That is a very good idea, a very good motive power to inspire and uplift the ignorant. But if we think for a moment, we shall find on the very face of it that it cannot be so. How can it be, seeing that good and evil are the obverse and reverse of the same coin? How can you have good without evil at the same time?
Swami VivekanandaOnly when a man sees this universe as God does the veil fall from his eyes; then that man, purified and cleansed, finds his whole vision changed.
Swami Vivekananda