Vengeance taken will often tear the heart and torment the conscience.

There is only one inborn erroneous notion ... that we exist in order to be happy ... So long as we persist in this inborn error ... the world seems to us full of contradictions. For at every step, in great things and small, we are bound to experience that the world and life are certainly not arranged for the purpose of maintaining a happy existence ... hence the countenances of almost all elderly persons wear the expression of ... disappointment.

To attain something desired is to discover how vain it is; and…though we live all our lives in expectation of better things, we often at the same time long regretfully for what is past. The present, on the other hand, is regarded as something quite temporary and serving only as the road to our goal. That is why most men discover when they look back on their life that they have the whole time been living ad interim, and are surprised to see that which they let go by so unregarded and unenjoyed was precisely their life, was precisely in expectation of which they lived.

The greatest wisdom is to make the enjoyment of the present the supreme object of life; because that is the only reality, all else being merely the play of thought. On the other hand, such a course might just as well be called the greatest folly: for that which in the next moment exists no more, and vanishes utterly, like a dream, can never be worth a serious effort.

For an author to write as he speaks is just as reprehensible as the opposite fault, to speak as he writes; for this gives a pedantic effect to what he says, and at the same time makes him hardly intelligible.

there are very few who can think, but every man wants to have an opinion; and what remains but to take it ready-made from others, instead of forming opinions for himself?

Scholars are those who have read in books, but thinkers, men of genius, world-enlighteners, and reformers of the human race are those who have read directly in the book of the world.