[7] Yasuda's best known book is The Japanese Haiku: Its Essential Nature, History, and Possibilities in English, with Selected Examples (1957).
Yasuda's 1957 book consists mainly of material from his doctoral dissertation from 1955, and includes both translations from Japanese and original poems of his own in English.
These had previously appeared in his book A Pepper-Pod: Classic Japanese Poems together with Original Haiku (Alfred A. Knopf, 1947).
[10] This notion of the haiku moment has been defined as 'an aesthetic moment' a timeless feeling of enlightened harmony as a poet's nature and environment are unified[11]'The passing momentary experience that comes alive through the precise perception of the image.
'[12] Yasuda's indirect influence was felt through the Beat writers;[citation needed] Jack Kerouac's The Dharma Bums appeared in 1958, with one of its main characters, Japhy Ryder (based on Gary Snyder), writing haiku.