The mystery of existence is the connection between our faults and our misfortunes.

One must choose in life between boredom and suffering.

Goethe has made a remark upon the perfectability of the human mind, which is full of sagacity: It is always advancing, but in a spiral line.

I must keep on rowing, not until I reach port but until I reach my grave.

Liberty is the only idea which circulates with the human blood, in all ages, in all countries, and in all literature - liberty that is, and what cannot be separated from liberty, a love of country.

[Ridicule] laughs at all those who see the earnestness of life and who still believe in true feelings and in serious thought ... It soils the hope of youth. Only shameless vice is above its reach.

Morality must guide calculation, and calculation must guide politics.