The only solid piece of scientific truth about which I feel totally confident is that we are profoundly ignorant about nature... It is this sudden confrontation with the depth and scope of ignorance that represents the most significant contribution of twentieth-century science to the human intellect.

If you want to use a cliche you must take full responsibility for it yourself and not try to fob it off on anon., or on society.

Society evolves not by shouting each other down, but by the unique capacity of unique, individual human beings to comprehend each other.

I suggest that the introductory courses in science, at all levels from grade school through college, be radically revised. Leave the fundamentals, the so-called basics, aside for a while, and concentrate the attention of all students on the things that are not known.

My mitochondria comprise a very large proportion of me. I cannot do the calculation, but I suppose there is almost as much of them in sheer dry bulk as there is the rest of me. Looked at in this way, I could be taken for a very large, motile colony of respiring bacteria, operating a complex system of nuclei, microtubules, and neurons for the pleasure and sustenance of their families, and running, at the moment, a typewriter.

We have come a long way on that old molecule DNA.

It is not so bad being ignorant if you are totally ignorant; the hard thing is knowing in some detail the reality of ignorance.