You love the accidental. A smile from a pretty girl in an interesting situation, a stolen glance, that is what you are hunting for, that is a motif for your aimless fantasy. You who always pride yourself on being an observateur must, in return, put up with becoming an object of observation. Ah, you are a strange fellow, one moment a child, the next an old man; one moment you are thinking most earnestly about the most important scholarly problems, how you will devote your life to them, and the next you are a lovesick fool. But you are a long way from marriage.

On the whole, the longing for solitude is a sign that there still is spirit in a person and is a measure of what spirit there is.

We live as if we were unaware of our impending destruction

If anyone on the verge of action should judge himself according to the outcome, he would never begin.

But doubt is wily and cunning and never, as it is sometimes said to be, loud or defiant. It is unassuming and sly, not bold or assertive - and the more unassuming, the more dangerous.

...the reason for [this age's] anxiety and unrest is because in one direction, 'truth' increases in scope and quantity - via science and technology - while in the other, certainty and confidence steadily decline. Our age is a master in developing truths while being wholly indifferent to certitude. It lacks confidence in the good.

To be lost in spiritlessness is the most terrible thing of all.