I used to analyze myself down ...

I used to analyze myself down to the last thread, used to compare myself with others, recalled all the smallest glances, smiles and words of those to whom I’d tried to be frank, interpreted everything in a bad light, laughed viciously at my attempts ‘to be like the rest’ –and suddenly, in the midst of my laughing, I’d give way to sadness, fall into ludicrous despondency and once again start the whole process all over again – in short, I went round and round like a squirrel on a wheel.
I used to analyze myself down to the last thread, used to compare myself with others, recalled all the smallest glances, smiles and words of those to whom I’d tried to be frank, interpreted everything in a bad light, laughed viciously at my attempts ‘to be like the rest’ –and suddenly, in the midst of my laughing, I’d give way to sadness, fall into ludicrous despondency and once again start the whole process all over again – in short, I went round and round like a squirrel on a wheel.
 Fyodor Dostoevsky

Quotes from the same author

Love animals: God has given them the rudiments of thought and joy untroubled. Do not trouble their joy, don't harrass them, don't deprive them of their happiness, don't work against God's intent. Man, do not pride yourself on superiority to animals; they are without sin, and you, with your greatness, defile the earth by your appearance on it, and leave the traces of your foulness after you - alas, it is true of almost every one of us!
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 Fyodor Dostoevsky
A widow, the mother of a family, and from her heart she produces chords to which my whole being responds.
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 Fyodor Dostoevsky
...to return to their 'native soil,' as they say, to the bosom, so to speak, of their mother earth, like frightened children, yearning to fall asleep on the withered bosom of their decrepit mother, and to sleep there for ever, only to escape the horrors that terrify them.
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 Fyodor Dostoevsky
God has such gladness every time he sees from heaven that a sinner is praying to Him with all his heart, as a mother has when she sees the first smile on her baby's face.
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 Fyodor Dostoevsky
There is immeasurably more left inside than what comes out in words.
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 Fyodor Dostoevsky