The best Quotations

Do you know the writers of the following quotations?

Quotation You just can't beat the person who never gives up. - writer
Quotation A woman's best love letters are always written to the man she is betraying. - writer
Quotation I speak Spanish to God, Italian to women, French to men and German to my horse. - writer
Quotation Today the large organization is lord and master, and most of its employees have been desensitized much as were the medieval peasants who never knew they were serfs. - writer
Quotation Ideas are the beginning points of all fortunes. - writer
Quotation Are there not thousands in the world who love their fellows even to the death, who feel the giant agony of the world, and more, like slaves to poor humanity, labor for mortal good? - writer