Knowledge is inherent in man; no knowledge comes from outside; it is all inside. We say Newton discovered gravitation. Was it sitting anywhere waiting for him? It was in his own mind; the time came and he found it out. All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind. The external world is simply the suggestion, the occasion, which sets you to study your own mind.
Swami VivekanandaExperience is the only teacher we have. We may talk and reason all our lives, but we shall not understand a word of truth until we experience it ourselves.
Swami VivekanandaNever think there is anything impossible for the soul. It is the greatest heresy to think so. If there is sin, this is the only sin; to say that you are weak, or others are weak.
Swami VivekanandaYou all know that certain things are necessary to make a religion. First of all, there is the book. The power of the book is simply marvellous! Whatever it be, the book is the centre round which human allegiance gathers. Not one religion is living today but has a book. With all its rationalism and tall talk, humanity still clings to the books. In your country every attempt to start a religion without a book has failed. In India sects rise with great success, but within a few years they die down, because there is no book behind them. So in every other country.
Swami Vivekananda