"Thank you for sending me a copy of your book; I'll waste no time reading it."

Moses Hadas (1900-1966) American teacher, scholar and translator

waste (verb): use extravagantly; use without care or good reason
I'll waste no time doing this: I will not do this; I will not spend any time on doing this
I'll waste no time in doing this (the usual expression): I will start to do this immediately

Contributor: Josef Essberger