What is in this life? You are Hindus, and there is the instinctive belief in you that life is eternal. Sometimes I have young men come and talk to me about atheism; I do not believe a Hindu can become an atheist. He may read European books, and persuade himself he is a materialist, but it is only for a time. It is not in your blood. You cannot believe what is not in your constitution; it would be a hopeless task for you. Do not attempt that sort of thing. I once attempted it when I was a boy, but it could not be. Life is short, but the soul is immortal and eternal, and one thing being certain, death, let us therefore take up a great ideal and give up our whole life to it. Let this be our determination.
- Swami Vivekananda
The Complete Works of Swami Vivekananda/Volume 3/Lectures from Colombo to Almora/The Future of India