no source QUOTES

1 " a typical chromosomal DNA molecule in a human being is composed of about five billion pairs of nucleotides… But since there are four different kinds of nucleotides, the number of bits of information in DNA is four times the number of nucleotide pairs. Thus if a single chromosome has five billion (5 X 10^9) nucleotides, it contains twenty billion (2 X 10^10) bits of information… We also see that if more than some tens of billions (several times 10^10) of bits of information are necessary for human survival, extragenetic systems will have to provide them: the rate of development of genetic systems is so slow that no source of such additional biological information can be sought in the DNA. "

― Carl Sagan , Dragons of Eden: Speculations on the Evolution of Human Intelligence

2 " I know the difference between sadness and depression. Clinical depression has no source from which it springs-it just is. Intractable sadness has nothing to do with synapses, or brain chemistry, or essential salts, it's born of something. It's the product of injustice and helplessness. It can be anesthetized, I suppose, but it's there, unaltered, when the medication wears off, like an intruder who has broken into your house and is still there every morning when you wake up.

Given the choice, I would rather be depressed. I've come back from depression. "

― Ka Hancock , Dancing on Broken Glass

3 " Poetry is and should not be explained
It’s not a theory not a formula or a set pattern
It’s a labyrinth of reflection with no source of image "

― Yarro Rai

4 " People said it because other people said it. They did not know why it was being said and heard everywhere. They did not give or ask for reasons. 'Reason,' Dr. Pritchett had told them, 'is the most naive of all superstitions.'
'The source of public opinion?' said Claude Slagenhop in a public radio speech. 'There is no source of public opinion. It is spontaneously general. It is a reflex of the collective instinct of the collective mind. "

― Ayn Rand , Atlas Shrugged