Question
Jewish nation has many tzaddikim. 25% of nobel prize winners are jewish. But I guess over the half of world tzaddikim are jewish. Why are there so many jewish tzaddikim? Is there any jewish know-how to produce tzaddikim?

Question
When a parent passes away, the child says Kaddish for eleven months, not twelve. I know it has something to do with the soul of the departed. Question 1: Does a parent say Kaddish for eleven months for a departed child? It is the custom of some people to say Kaddish for eleven months even if it is not mandated - for example: husband for departed wife, sibling for departed sibling. Question 2: Should someone say Kaddish every time the Mourner's Kaddish can be recited after the twelve months? How does that reflect on the departed person's soul?

Question
Shalom aleichem Rabbi Lauffer. Thank you for answering my last question. Would it be permitted to write one's name inside the front cover of one's sefer, or would this be prohibited on account of writing divrei chol in a sefer. Thanks a lot.

Question
What is the origin of the word “Amen”? Does it first appear in the Torah? Why do we say it after hearing a blessing? Thank you.