The best Quotations

Do you know the writers of the following quotations?

Quotation If you want to be thought a liar, always tell the truth. - writer
Quotation It is my ambition to say in ten sentences; what others say in a whole book. - writer
Quotation It is not death, but dying, which is terrible. - writer
Quotation The age of chivalry has gone; the age of humanity has come. - writer
Quotation Behold I do not give lectures or a little charity, When I give I give myself. - writer
Quotation There are people who possess not so much genius as a certain talent for perceiving the desires of the century, or even of the decade, before it has done so itself. - writer