"Every discovery takes place in more than a scientific context." Charles Pedersen, born 3 October 1904.
"But I am leaving the regions of fact, which are difficult to penetrate, but which bring in their train rich rewards, and entering the regions of speculation, where many roads lie open, but where a few lead to a definite goal." William Ramsay, born 2 October 1852.
"There is no concept in the whole field of physics which is more difficult to understand than is the concept of entropy, nor is there one which is more fundamental." Francis Sears, born 1 October 1898.
"Lastly, and doubtless always, but particularly at the end of the last century, certain scholars considered that since the appearances on our scale were finally the only important ones for us, there was no point in seeking what might exist in an inaccessible domain. I find it very difficult to understand this point of view since what is inaccessible today may become accessible tomorrow (as has happened by the invention of the microscope), and also because coherent assumptions on what is still invisible may increase our understanding of the visible." Jean Baptiste Perrin, born 30 September 1870.
"Where is everybody?" Enrico Fermi, born 29 September 1901.
"Origami helps in the study of mathematics and science in many ways. Using origami anyone can become a scientific experimenter with no fuss." Martin Kruskal, born 28 September 1925.
"We devise heart transplants, but do little for the 15 million who die annually of malnutrition and related diseases. Our cleverness has grown prodigiously - but not our wisdom." Martin Ryle, born 27 September 1918.