The best Quotations

Adam was the luckiest man; he had no mother-in-law.
- Mark Twain

Do you know the writers of the following quotations?

Quotation A man is a worker. If he is not that he is nothing. - writer
Quotation A child is a beam of sunlight from the Infinite and Eternal, with possibilities of virtue and vice- but as yet unstained. - writer
Quotation I have a dream that my four little children will one day live in a nation when they will not be judged by the color of their skin, but by the content of their character. - writer
Quotation Hold your head high, stick your chest out. You can make it. It gets dark sometimes, but morning comes. Keep hope alive. - writer
Quotation Do not handicap your children by making their lives easy. - writer
Quotation Sin, guilt, neurosis -they are one and the same, the fruit of the tree of knowledge. - writer