ऊँ असतोम सद्गमय, तमसोमा ज्योतिर्गमय ।
मृत्योर्मा अमृतंगमया, ऊँ शान्ति शान्ति शान्तिः ।।
Om! Asatoma Sadgamaya, Tamasoma Jyotirgamaya, Mrityorma Amritamgamaya, Om Shanti, Shanti, Shantihi!
This is one of the most famous slokas in India. I think most schools (at least when I was a kid) have this in their silence or prayer hour. When I was in primary school, we had a two minute silence period, in which all of us had to stand silently. I hardly knew the meaning of this sloka when I used to sing this after the silence hour in the morning. Here is what it means:
Lead the world from the unreal to the real (truth), from ignorance to knowledge, from mortality to immortality and peace!
This signifies one thing – what ever happens, at the end, we need one thing – PEACE!