Wake up now :
Wake up. Beware. That tomorrow will never come. Wake up now. Life is sort. Time is fleeting. Apply yourself diligently to Yogic Sadhana. You have abundant energy. You must offer a pure flower to the Lord; a beautiful mind to the Lord; not after it is tainted by so many worldly taints. Keep yourself pure through selfless service. However intellectual you may be – you may be a great scientist – you cannot realise the Atma without inner purification. The scientist also is a Raja Yogi; but he is an external Raja Yogi. He gropes in darkness. He must find out the pure consciousness. Then only can he become a real Raja Yogi. Swami Sivananda