"Indra was the god of the thunderstorm that puts an end to the oppressive summer heat and opens the rainy season.... However, the Buddha arrived just in time for Indra to play a role in his career. it was Indra himself who persuaded the freshly awakened Shakyamuni to start preaching his newfound path. Buddhist monks then spread the cult of Indra to foreign lands as far as Japan. Indra’s weapon, the lightning or vajra, became the emblem of instant Enlightenment. The sought-after “Self-nature” (Chinese zixing) is present all the time, deep in all of us; but when we embark on the path of meditation and finally awaken to it, it strikes like lightning."