There are cynics who deny the existence of human gratitude. But it seems that I am no cynic. So convinced am I of the existence of gratitude that I see in it one of our strongest oppositions. There are millions of persons who receive favors that they forget: but gratitude does exist, and they've got to express it somewhere. They take it out by being grateful to science for all that science has done for them, a gratitude, which, according to their dull perceptions won't cost them anything. So there is economic indignation against anybody who is disagreeable to science. He is trying to rob the people of a cheap gratitude.
I like a bargain as well as does anybody else, but I can't save expenses by being grateful to Science, if for every scientist who has perhaps been of benefit to me, there have been many other scientists who have tried to strangle that possible benefit.

What It Means

This is a placeholder explanation generated by the low-overhead model. It interprets "There are cynics who deny the existence of human gratitude. But it seems that I am no cynic. So convinced am I of the existence of gratitude that I see in it one of our strongest oppositions. There are millions of persons who receive favors that they forget: but gratitude does exist, and they've got to express it somewhere. They take it out by being grateful to science for all that science has done for them, a gratitude, which, according to their dull perceptions won't cost them anything. So there is economic indignation against anybody who is disagreeable to science. He is trying to rob the people of a cheap gratitude.
I like a bargain as well as does anybody else, but I can't save expenses by being grateful to Science, if for every scientist who has perhaps been of benefit to me, there have been many other scientists who have tried to strangle that possible benefit." in the context of "Pt 1, Ch. 4" to mean that wisdom is timeless.