Keely
"These (three modes of vibration), it will be noted, correspond to the three laws of being. It is not to be understood that any one of these three modes of vibration can exist independently. Each by itself is called a "current," and all three must be present in every "stream" or "flow" of force. The relations of the currents in every flow are expressible in thirds, and it is experimentally demonstrable that the relations of the three are in the order named: as 33 1/3 : 66 2/3 : 100." [Keely and His Discoveries, Conclusion, Keely's Physical Philosophy]

"The Harmonic chord is the third current of the terrestrial stream." [Keely]

See Also

369
Addendum 8, for the full text of Professor Daniel Brinton's Laws of Being. See also Laws of Being - Annotated, Keelys Laws of Being.