There is no such thing as a "self-made" man. We are made up of thousands of others. Everyone who has ever done a kind deed for us, or spoken one word of encouragement to us, has entered into the make-up of our character and of our thoughts, as well as our success.
The first real mental illumination I remember to have experienced was when I saw that the universe exists in each of its individual atoms - that is, the universe is the result of a few simple processes infinitely repeated. When a drop of water has been mathematically measured, every principle will have been used which would be called form in the measurement of the heavens. All life on the globe is sustained by digestion and assimilation; when by voluntary and traumatic action these stop death follows. The history of an individual mind is the history of the race. Know one thing in its properties and relations and you will know all things.
Human sorrow springs from three things: to want before it is due; to want more than your share; to want what belongs to others.
The best thing to give to your enemy is forgiveness; to an opponent, tolerance; to a friend, your heart; to your child, a good example; to a father, deference; to your mother, conduct that will make her proud of you; to yourself, respect; to all men, charity.
Of human life the time is a point, and the substance is in a flux, and the perception dull, and the composition of the whole body subject to putrefaction, and the soul a whirl, and fortune hard to divine, and fame a thing devoid of judgment. And, to say all in a word, everything which belongs to the body is a stream, and what belongs to the soul is a dream and a vapor, and life is a warfare and a stranger’s sojourn, and after-fame is oblivion.
It is a very easy thing to devise good laws; the difficulty is to make them effective. The great mistake is that of looking upon men as virtuous, or thinking that they can be made so by laws; and consequently the greatest art of a politician is to render vices serviceable to the cause of virtue.
Whatever study tends neither directly nor indirectly to make us better men and citizens is at best a specious an ingenious sort of idleness; and the knowledge we acquire by it only a credible kind of ignorance, nothing more.