The tallest oak tree once was an acorn that any pig could have swallowed.

The weakness of their reasoning faculty also explains why women show more sympathy for the unfortunate than men;... and why, on the contrary, they are inferior to men as regards justice, and less honourable and conscientious.

Any book, which is at all important, should be reread immediately

You can do what you will, but in any given moment of your life you can will only one definite thing and absolutely nothing other than that one thing.

There is in the world only the choice between loneliness and vulgarity. All young people should be taught now to put up with loneliness ... because the less man is compelled to come into contact with others, the better off he is.

To truth only a brief celebration of victory is allowed between the two long periods during which it is condemned as paradoxical, or disparaged as trivial.

A man can be himself only so long as he is alone; and if he does not love solitude, he will not love freedom; for it is only when he is alone that he is really free.