This is one great point to understand, and, my friends, my brethren, let me tell you, this is the one point we shall have to insist upon in the future. For I am firmly convinced, and I beg you to understand this one fact - no good comes out of the man who day and night thinks he is nobody. If a man, day and night, thinks he is miserable, low, and nothing, nothing he be...comes. If you say yea, yea, "I am, I am", so shall you be; and if you say "I am not", think that you are not, and day and night meditate upon the fact that you are nothing, ay, nothing shall you be. That is the great fact which you ought to remember. We are the children of the Almighty, we are sparks of the infinite, divine fire. How can we be nothings? We are everything, ready to do everything, we can do everything, and man must do everything. This faith in themselves was in the hearts of our ancestors, this faith in themselves was the motive power that pushed them forward and forward in the march of civilisation; and if there has been degeneration, if there has been defect, mark my words, you will find that degradation to have started on the day our people lost this faith in themselves.
- Swami Vivekananda
The Complete Works of Swami Vivekananda/Volume 3/Lectures from Colombo to Almora/The Common Bases of Hinduism