Never let success hide its emptiness from you, achievement...

Never let success hide its emptiness from you, achievement its nothingness, toil its desolation. And so...keep alive the incentive to push on further, that pain in the soul which drives us beyond ourselves...Do not look back. And do not dream about the future, either. It will neither give you back the past, nor satisfy your other daydreams. Your duty, your reward - your destiny - are here and now.