Sen Rikyu (1522-1591), the greatest sixteenth century tea master, identified the spirit of the Way of Tea with the four basic principles of harmony, respect, purity, and tranquility.
Here is a link to to the Tokugawa
Museum which shows a variety of ancient tea instruments.
Tea (along with vodka) is the national drink of the Russians today.(compare that with coffee (along with beer) for America.(yeek).