The best Quotations

Is discord going to show itself while we are still fighting, is the jew once again worth less than another? oh, it is sad, very sad, that once more, for the umpteenth time, the old truth is confirmed: ''what one christian does is his own responsibility, what one jew does is thrown back at all jews.
- Anne Frank

Do you know the writers of the following quotations?

Quotation Nothing is so contagious as enthusiasm. - writer
Quotation As one grows older, one becomes wiser and more foolish. - writer
Quotation The drops of rain make a hole in the stone, not by violence, but by oft falling. - writer
Quotation Revenge is profitable, gratitude is expensive. - writer
Quotation The function of socialism is to raise suffering to a higher level. - writer
Quotation Life is not a series of gig lamps symmetrically arranged; life is a luminous halo, a semi-transparent envelope surrounding us from the beginning of consciousness to the end. - writer