Think of the ship; it belongs in the water, but water must not come into the ship - that would be disastrous. Similarly, it is right and fitting that we live in this world, and if we stay above the surface, then we can reach the safe harbor of life - and help others to do so. But it would be our demise if the world entered into our hearts.

source: Sundar Singh, The Wisdom of the Sadhu, 108 tags: Holiness