The best Quotations

We tend to get what we expect.
- Norman Vincent Peale

Do you know the writers of the following quotations?

Quotation It is not possible for one to teach others who cannot teach his own family. - writer
Quotation A wise man thinks what is easy is difficult. - writer
Quotation I choose a block of marble and chop off whatever I don't need. - writer
Quotation He is no wise man who will quit a certainty for an uncertainty. - writer
Quotation I think it's the duty of the comedian to find out where the line is drawn and cross it deliberately. - writer
Quotation Honest people will respect us for our merit: the public, for our luck. - writer