The formula for complete happiness is to be very busy with the unimportant. If I have seen farther, it is by standing on the shoulders of giants. I don't know what I amy seem to the world, but as to myself, I seem to have been only like a boy playing on the sea-shore and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me. We can easily manage, if we will only take each day, the burden appointed for it. But the load will be too heavy for us if we carry yeaterday's burden over again today, and then add the burden of the morrow to the weight before we are required to bear it.
Life has no meaning except in terms of responsibility.
One is healthy when one can laugh at the earnestness and zeal with which one has been hypnotized by any single detail of one's life. Profundity of thought belongs to youth, clarity of thought to old age. Whoever fights monsters should see to it that in the process they do not become a monster. And when you look long into the abyss the abyss also looks into you. Success is the progressive realization of a worthy ideal.