The best Quotations

Do you know the writers of the following quotations?

Quotation For we are born in other's pain, and perish in our own. - writer
Quotation The best portraits are those in which there is a slight mixture of caricature. - writer
Quotation To the dull mind all nature is leaden. To the illumined mind the whole world burns and sparkles with light. - writer
Quotation Many people want the government to protect the consumer. A much more urgent problem is to protect the consumer from the government. - writer
Quotation The most advanced nations are always those who navigate the most. - writer
Quotation Language is fossil poetry. - writer