A light has dawned for me: I need companions, living ones, not dead companions and corpses which I carry with me wherever I wish. But I need living companions who follow me because they want to follow themselves- and who want to go where I want to go.
The greater the scientist, the more he is impressed with his ignorance of reality, and the more he realizes that his laws and labels, descriptions and definitions, are the products of his own thought. They help him to use the world for purposes of his own devising rather than understand and explain it.
What I must do is all that concerns me, not what people think. This rule,equally arduous in actual and intellectual life, may serve for the whole distinction between greatness and meanness. It is the harder, because you will always find those who think they know what is your duty better than you know it. It is easy in the world to live after the world's opinion; it is easy in solitude to live after our own; but the great man is he who in the midst of the crowd keeps with perfect sweetness the independence of solitude.
The poor inhabitant below Was quick to learn and wise to know And keenly felt the friendly glow And softer flame; But thoughtless follies laid him low, And stain'd his name!