The best Quotations

Happiness is a by-product. you cannot pursue it by itself.
- Samuel Levenson

Do you know the writers of the following quotations?

Quotation Personal columnists are jackals and no jackal has been known to live on grass once he had learned about meat - no matter who killed the meat for him. - writer
Quotation All progress is initiated by challenging current conceptions, and executed by supplanting existing institutions. - writer
Quotation I don't need anyone to rectify my existence. The most profound relationship we will ever have is the one with ourselves. - writer
Quotation Action is a great restorer and builder of confidence. Inaction is not only the result, but the cause, of fear. Perhaps the action you take will be successful; perhaps different action or adjustments will have to follow. But any action is better than no action at all. - writer
Quotation Anger is never without an argument, but seldom with a good one. - writer
Quotation Consider, when you are enraged at any one, what you would probably think if he should die during the dispute. - writer