Daisaku Ikeda
If our lives are always smooth sailing, we’ll never be able to savor real happiness. It goes without saying that the treasure of happiness cannot be found in a life of ease and idleness. The diamond of happiness can be found only by making our way into the deep mountain recesses of life with great effort and exertion. From The Wisdom for Creating Happiness and Peace, part 1, revised edition, p. 11