It is too often believed that a person in his progress towards perfection passes from error to truth; that when he passes on from one thought to another, he must necessarily reject the first. But no error can lead to truth. The soul passing through its different stages goes from truth to truth, and each stage is true; it goes from lower truth to higher truth.
Swami VivekanandaUnderstanding human nature is the highest knowledge, and only by knowing it can we know God. It is also a fact that the knowledge of God is the highest knowledge, and only by knowing God can we understand human nature.
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