“A spring never free from the pressure of some foreign body at last loses its elasticity; and so does the mind if other people’s thoughts are constantly forced upon it.”

“A constant flow of thoughts expressed by other people can stop and deaden your own thought and your own initiative…. That is why constant learning softens your brain…. Stopping the creation of your own thoughts to give room for the thoughts from other books reminds me of Shakespeare’s remark about his contemporaries who sold their land in order to see other countries.”

“And yet, just as our body would burst asunder if the pressure of the atmosphere were removed from it, so would the arrogance of men expand, if not to the point of bursting then to that of the most unbridled folly, indeed madness, if the pressure of want, toil, calamity and frustration were removed from their life. One can even say that we require at all times a certain quantity of care or sorrow or want, as a ship requires ballast, in order to keep on a straight course.”

“The actual life of a thought lasts only until it reaches the point of speech...As soon as our thinking has found words it ceases to be sincere...When it begins to exist in others it ceases to live in us, just as the child severs itself from its mother when it enters into its own existence.”

“When we read, another person thinks for us: we merely repeat his mental process. In learning to write, the pupil goes over with his pen what the teacher has outlined in pencil: so in reading; the greater part of the work of thought is already done for us. This is why it relieves us to take up a book after being occupied with our own thoughts. And in reading, the mind is, in fact, only the playground of another’s thoughts. So it comes about that if anyone spends almost the whole day in reading, and by way of relaxation devotes the intervals to some thoughtless pastime, he gradually loses the capacity for thinking; just as the man who always rides, at last forgets how to walk. This is the case with many learned persons: they have read themselves stupid.”

“A book can never be anything more than the impress of its author's thoughts; and the value of these will lie either in the matter about which he has thought, or in the form which his thoughts take, in other words, what it is that he has thought about it.”

“However, the struggle with that sentinel is, as a rule, not so hard as it may seem from a long way off, mainly in consequence of the antagonism between the ills of the body and the ills of the mind. If we are in great bodily pain, or the pain lasts a long time, we become indifferent to other troubles; all we think about is to get well. In the same way great mental suffering makes us insensible to bodily pain; we despise it; nay, if it should outweigh the other, it distracts our thoughts, and we welcome it as a pause in mental suffering. It is this feeling that makes suicide easy; for the bodily pain that accompanies it loses all significance in the eyes of one who is tortured by an excess of mental suffering. This is especially evident in the case of those who are driven to suicide by some purely morbid and exaggerated ill-humor. No special effort to overcome their feelings is necessary, nor do such people require to be worked up in order to take the step; but as soon as the keeper into whose charge they are given leaves them for a couple of minutes, they quickly bring their life to an end.When, in some dreadful and ghastly dream, we reach the moment of greatest horror, it awakes us; thereby banishing all the hideous shapes that were born of the night. And life is a dream: when the moment of greatest horror compels us to break it off, the same thing happens.”