What makes the difference between man and man is the difference in this Shraddha and nothing else. What make one man great and another weak and low is this Shraddha. My Master used to say, he who thinks himself weak will become weak, and that is true. This Shraddha must enter into you. Whatever of material power you see manifested by the Western races is the outcome of this Shraddha, because they believe in their muscles and if you believe in your spirit, how much more will it work! Believe in that infinite soul, the infinite power, which, with consensus of opinion, your books and sages preach. That Atman which nothing can destroy, in It is infinite power only waiting to be called out.
- Swami Vivekananda
The Complete Works of Swami Vivekananda/Volume 3/Lectures from Colombo to Almora/Address of Welcome Presented at Calcutta and Reply