"We may talk about seeing nothing beyond and keeping all our hopes and aspirations confined to the present moment, and struggle hard not to think of anything beyond the world of senses; and, perhaps, everything outside helps to keep us limited within its narrow bounds. The whole world may combine to prevent us from broadening out beyond the present. Yet, so long as there is death, the question must come again and again, "Is death the end of all these things to which we are clinging, as if they were the most real of all realities, the most substantial of all substances?" The world vanishes in a moment and is gone. Standing on the brink of a precipice beyond which is the infinite yawning chasm, every mind, however hardened, is bound to recoil and ask, "Is this real?" The hopes of a lifetime, built up little by little with all the energies of a great mind, vanish in a second. Are they real? This question must be answered."
- Swami Vivekananda, "The Real Nature of Man" (The Real and The Apparent Man, June 21, 1896, Royal Institute of Painters, London), Jnana Yoga, Complete Works: Vol 2