The best Quotations

Oh, high is the price of parenthood, and daughters may cost you double. you dare not forget, as you thought you could, that youth is a plague and a trouble.
- Phyllis Mcginley

Do you know the writers of the following quotations?

Quotation The shoe that fits one person pinches another; there is no recipe for living that suits all cases. - writer
Quotation The harder I work the luckier I get. - writer
Quotation Pursuit and seduction are the essence of sexuality. It's part of the sizzle. - writer
Quotation To do nothing evil is good; to wish nothing evil is better. - writer
Quotation Every addition to true knowledge is an addition to human power. - writer
Quotation Neither irony or sarcasm is argument. - writer