Whatever you think, that you will be. If you think yourselves weak, weak you will be; if you think yourselves strong, strong you will be; if you think yourselves impure, impure you will be; if you think yourselves pure, pure you will be. This teaches us not to think ourselves as weak, but as strong, omnipotent, omniscient. No matter that I have not expressed it yet, it is in me. All knowledge is in me, all power, all purity, and all freedom. Why cannot I express this knowledge? Because I do not believe in it. Let me believe in it, and it must and will come out. This is what the idea of the Impersonal teaches. Make your children strong from their very childhood; teach them not weakness, nor forms, but make them strong; let them stand on their feet — bold, all-conquering, all-suffering; and first of all, let them learn of the glory of the soul. That you get alone in the Vedanta — and there alone. It has ideas of love and worship and other things which we have in other religions, and more besides; but this idea of the soul is the life-giving thought, the most wonderful. There and there alone is the great thought that is going to revolutionist the world and reconcile the knowledge of the material world with religion.
- Swami Vivekananda
The Complete Works of Swami Vivekananda/Volume 3/Lectures from Colombo to Almora/Vedantism