"The poet, Tuvia Ribner, a close friend for dozens of years, and the executor of her literary estate said: "The memory of the father and her fear accompanied Leah to adulthood. This is the reason, I believe, that she chose the stricter poetic forms, such as a sonnet, which has 14 lines, meticulous rhyming scheme and fixed rhythm, and avoided loose rhythms. Her poetics emerge from a strong need for self-control, every single one of her poems having a rational basis, meant to guard the poem and herself."
January 1, 1970
https://en.wikiquote.org/wiki/Leah_Goldberg