The best Quotations

To have great poets, there must be great audiences too.
- Walt Whitman

Do you know the writers of the following quotations?

Quotation To be successful, a woman has to be better at her job than a man. - writer
Quotation I was so cold the other day, I almost got married. - writer
Quotation Old minds are like old horses; you must exercise them if you wish to keep them in working order. - writer
Quotation Acquire a firm will and the utmost patience. - writer
Quotation He who labors diligently need never despair; for all things are accomplished by diligence and labor. - writer
Quotation Criticism, that fine flower of personal expression in the garden of letters. - writer