The best Quotations

Do you know the writers of the following quotations?

Quotation Englishmen are babes in philosophy and so prefer faction-fighting to the labor of its unfamiliar thought. - writer
Quotation Every time you have to speak, you are auditioning for leadership. - writer
Quotation there is no such thing as a harmless truth. - writer
Quotation The future can be anything we want it to be, providing we have the faith and that we realize that peace, no less than war, required ''blood and sweat and tears.'' - writer
Quotation This Party is a moral crusade or it is nothing. - writer
Quotation We should come home from adventures, and perils, and discoveries every day with new experience and character. - writer