Today's quote is from A. N. Whitehead in his 1927 lectures at the University of Virginia:

The human mind is functioning symbolically when some components of its experience elicit consciousness, beliefs, emotions and usages, respecting other components of experience. The former set of components are the symbols, and the latter set constitute the meaning of the symbols.

At the moment, I am bench-testing my own definition of symbol as:

a perception hardwired to carry a physiological charge.

The quick simplification of this is:

a synaptic ping.