To be busy is man's only happiness.

Man's mind clumsily and tediously and laboriously patches little trivialities together and gets a result - such as it is

Sanity and happiness are an impossible combination.

Obscurity and a competence—that is the life that is best worth living.

When all is said and done, the one sole condition that makes spiritual happiness and preserves it is the absence of doubt

The conviction of the rich that the poor are happier is no more foolish than the conviction of the poor that the rich are