The best Quotations

The happiness or unhappiness of men depends as much on their humors as on fortune.
- Francois de la Rochefoucauld

Do you know the writers of the following quotations?

Quotation When you lose a couple of times, it makes you realize how difficult it is to win. - writer
Quotation I can honestly say that I was never affected by the question of the success of an undertaking. If I felt it was the right thing to do, I was for it regardless of the possible outcome. - writer
Quotation As soon as man does not take his existence for granted, but beholds it as something unfathomably mysterious, thought begins. - writer
Quotation Pessimism is an excuse for not trying and a guarantee to a personal failure. - writer
Quotation The few who do are the envy of the many who only watch. - writer
Quotation Hollywood is the only industry, even taking in soup companies, which does not have laboratories for the purpose of experimentation. - writer