The progress of Science consists in observing interconnections and in showing with a patient ingenuity that the events of this ever-shifting world are but examples of a few general relations, called laws. To see what is general in what is particular, and what is permanent in what is transitory, is the aim of scientific thought.
To his sister-in-law: What a contrast between us! You live a warm and glowing life, surrounded by loved ones whom you care for and who care for you; you are anchored in contentment. I drift about without rudder or compass, a wreck on the sea of life; I have no memories to cheer me, no pleasant illusions of the future to comfort me, or about me to satisfy my vanity. I have no family to furnish the only kind of survival that concerns us, no friends for the wholesome development of my affections, or enemies for my malice.