What is "this drive"? It's the tendency to not simply accept things as they are but to want to think about them, to understand them. To not be content to simply feel sad but to ask what sadness means. To not just get a bus pass but to think about the economic reasons getting a bus pass makes sense. I call this tendency the intellectual.
Change is certain. Peace is followed by disturbances; departure of evil men by their return. Such recurrences should not constitute occasions for sadness but realities for awareness, so that one may be happy in the interim.
I see the President almost every day. I see very plainly Abraham Lincoln's dark brown face with its deep-cut lines, the eyes always to me with a deep latent sadness in the expression. None of the artists or pictures has caught the deep, though subtle and indirect expression of this man's face. There is something else there. One of the great portrait painters of two or three centuries ago is needed.
The point is not that this world is too sad to love or too glad not to love; the point is that when you do love a thing, its gladness is a reason for loving it, and its sadness a reason for loving it more.
What is the source of sadness, but feebleness of the mind? What giveth it power but the want of reason? Rouse thyself to the combat, and she quitteth the field before thou strikest.
There is a sadness at the back of life which some people do not attempt to mitigate. Entirely aware of their own standing in the shadow, and yet alive to every tremor and gleam of existence, there they endure.
Nature always wears the colors of the spirit. To a man laboring under calamity the heat of his own fire hath sadness in it. Then there is a kind of contempt of the landscape felt by him who has just lost by death a dear friend. The sky is less grand as it shuts down over less worth in the population.
Happiness is one pole, sadness is another. Blissfulness is one pole, misery is another. Life consists of both, and life is richer because of both. A life only of blissfulness will have extension, but will not have depth. A life of only sadness will have depth, but will not have extension.