Spam comments take an interesting turn… proverbs?

I receive a lot of spam, most of which are caught by filters. Spammers try different tactics - sometimes posting comments advertising a product, sometimes commenting about the subject matter in a vague manner, and sometimes posting random sentences which don't make sense. Recently, I noticed a strange and intriguing trend - I've been receiving comments that are motivational quotes or philosophical proverbs (which have nothing to do with the topic). One of them even included attribution (to Steve Martin)! I decided to save some of them and post them here:

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In the business world, everyone is paid in two coins: cash and experience. Take the experience first; the cash will come later.
Success is the maximum utilisation of the ability that you have.

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The desire not to be anything is the desire not to be.
You can often measure a person by the size of his dream.
Positive thinking won't let you do anything but it will let you do everything better than negative thinking will.

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Good things happen when you pay attention.

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"A day without sunshine is like, you know, night." - Steve Martin

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Positive thinking won't let you do anything but it will let you do everything better than negative thinking will.
People create their own success by learning what they need to learn and then by practicing it until they become proficient at it.
To go forward is to move toward perfection. March on, and fear not the thorns, or the sharp stones on life's path.
It is never too late to be what you might have been.
Far and away the best prize that life has to offer is the chance to work hard at work worth doing.
Every man's work, whether it be literature, or music or pictures or architecture or anything else, is always a portrait of himself.
What you get by reaching your destination isn't nearly as important as what you become by reaching your goals - what you will become is the winner you were born to be!
Leaders aren't born they are made. And they are made just like anything else, through hard work.
What is a friend? I will tell you… it is someone with whom you dare to be yourself.
Treat a person as he is, and he will remain as he is. Treat him as he could be, and he will become what he should be.
What you get by reaching your destination isn't nearly as important as what you become by reaching your goals - what you will become is the winner you were born to be!
Coming together is a beginning, staying together is progress, and working together is success.
If people like you they'll listen to you, but if they trust you they'll do business with you.
Remember you will not always win. Some days, the most resourceful individual will taste defeat. But there is, in this case, always tomorrow - after you have done your best to achieve success today.
Be true to your work, your word, and your friend.
Fresh activity is the only means of overcoming adversity.
A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves.
There are two things to aim at in life: first, to get what you want; and, after that, to enjoy it. Only the wisest of mankind achieve the second.
None of us is as smart as all of us.
Singleness of purpose is one of the chief essentials for success in life, no matter what may be one's aim.
The noblest search is the search for excellence.
Life has no blessing like a prudent friend.

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To accomplish great things, we must dream as well as act.