"Our various Yogas do not conflict with each other; each of them leads us to the same goal and makes us perfect. Only each has to be strenuously practiced. The whole secret is in practicing. First you have to hear, then think, and then practice. This is true of every Yoga. You have first to hear about it and understand what it is; and many things which you do not understand will be made clear to you by constant hearing and thinking. It is hard to understand everything at once. The explanation of everything is after all in yourself. No one was ever really taught by another; each of us has to teach himself. The external teacher offers only the suggestion which rouses the internal teacher to work to understand things. Then things will be made clearer to us by our own power of perception and thought, and we shall realize them in our own souls; and that realization will grow into the intense power of will."

- Swami Vivekananda, "Non-attachment is complete self-abnegation" (Advanced karma yoga class, Jan 3, 1896, New York Vedanta Society), Karma Yoga, Complete Works: Vol 1