The following are related quotes:
“The answer to the question ‘what are we made of’ is: protons and neutrons, the heavy particles, or baryons, and electrons, the light particles, or leptons.”— Michael Robinson (1999), The Nine Number of the Cosmos 
● Social proton
1. Rowan-Robinson, Michael. (1999). The Nine Numbers of the Cosmos (pgs. 6, 8). Oxford University Press.
● Proton – Wikipedia.