The pure mind must have its foundation in the early years of life. The elderly man whose mind turns toward the philosophic and religious spheres can at best only become the shadow of the spiritual man. He may have all the form, but lacks the substance.
Age
When you're eighteen, the world's your oyster. If you don't find a pearl in it, you just open-up another one.
Yet the time will come when you run out of oysters to open, and the pearls you have turn red-hot.