From Notes Of Class Talks And Lectures of Volume 6 of The Complete Works of Swami Vivekananda
This world is not for cowards. Do not try to fly. Look not for success or failure. Join yourself to the perfectly unselfish will and work on. Know that the mind which is born to succeed joins itself to a determined will and perseveres. You have the right to work, but do not become so degenerate as to look for results. Work incessantly, but see something behind the work. Even good deeds can find a man in great bondage. Therefore be not bound by good deeds or by desire for name and fame. Those who know this secret pass beyond this round of birth and death and become immortal.
The ordinary Sannyasin gives up the world, goes out, and thinks of God. The real Sannyasin lives in the world, but is not of it. Those who deny themselves, live in the forest, and chew the cud of unsatisfied desires are not true renouncers. Live in the midst of the battle of life. Anyone can keep calm in a cave or when asleep. Stand in the whirl and madness of action and reach the Centre. If you have found the Centre, you cannot be moved.