Confucian philosophy urges the putting aside of personal interest for the greater good of the public.
Seiren is the virtue of having a pure heat with no selfish, personal ambitions.
The phrase seiren-keppaku(integrity and purity) refers to acting with absolute impartiality, avoiding all shame or dishonor.
The concept of seiren merged with the Buddhist values of Zen and samurai values of bushido to produce a way of thinking that found beauty in simplicity.
the ultimate expression of this is probably the minimalism of the Japanese rock garden.