Just as all the genes of a human being are laid down at conception and thereafter all the physical features which manifest in the child as it develops are results of those genes, so too all phenomena in the world are a reflection of the elements contained, infinitely compressed, in their beginnings. The moment of transition from non-existence to existence is the most potent, containing all. Thereafter, as the child develops, a critical phase follows, but not as critical as the first instant, and so on, each phase a revelation of the coding of the previous. The closer to the beginning, the more critical. Therefore, the moment which demands greatest care, greatest intensity, greatest purity, is the very first.
Time is also a creation.
The Jewish year is an organic entity. Its conception takes place on Rosh Hashana and Yom Kippur. For this reason we are so extremely careful about trying to live correctly on Rosh Hashana and the subsequent days. The way one begins the year will determine how the rest of the year reveals itself. If one can form the genes of the year correctly, the fetus will develop correctly and the child and adult will be wholesome.