The human will stands beyond all circumstances. Everything must go down before the will, for that comes from God Himself; a pure and a strong will is omnipotent. Before it all the powers, even of nature, must bow down, succumb, and become its servants - the strong gigantic, infinite will in man.
Swami VivekanandaWhatever you think, that you will be. If you think yourselves weak, weak you will be; if you think yourselves strong, strong you will be.
Swami VivekanandaThat intense faith in another world, that intense hatred for this world, that intense power of renunciation, that intense faith in God, that intense faith in the immortal soul, is in you. I challenge anyone to give it up. You cannot. You may try to impose upon me by becoming materialists, by talking materialism for a few months, but I know what you are; if I take you by the hand, back you come as good theists as ever were born. How can you change your nature?
Swami Vivekananda