Charity Elevates a People
The book Charity Elevates a People edited from talks delivered by HaRav Zvi Yisrael Tau on the value of the mitzvah of charity, based on the teachings of Rabbi Avraham Yitzchak Hacohen Kook (may his memory be for a blessing).
In his vast spirit, Rav Kook lays forth a profoundly revolutionary understanding of the meaning of social gaps and of the subsequent need to perform the mitzvah of charity. This guidance, based on holy sources and applied to societal-economic reality, is like the injection of a soul into the continuously growing national body.
This book is available in Hebrew Version as well