It'll be one of those moments I'll remember, like coming into work and being told about the Challenger disaster, or turning on the car radio and hearing the hushed voices of the announcers on 9/11. Like so many people I feel a connection to this wonderful man.
Of course he did more than play Spock; and in the early post-TOS years he was famously ambivalent about his association with the role. But he did something special with that role. It's easy in the fog of nostalgia to forget that man TOS scripts weren't all that great (although some of them were). The character of Spock might have become just an obscure bit of pop culture trivia; instead Nimoy turned Spock into a character that I feel sure actors in our grandchildren's generation will want to play and make their mark upon.
What Nimoy brought to that role is a dignity and authenticity, possibly rooted in his "alien" experience as the child of Ukrainian Jewish immigrants. In less sensitive hands the part might have been a joke, but I think what many of us took away from Nimoy's performance was something that became deeply influential in our world views. Nimoy's Spock taught us that there was something admirable in being different even when that is hard for others to understand; that winning the respect of others is just as rewarding as popularity. The world needs its oddballs and misfits, not to conform, but to be the very best version of themselves they can be. Authenticity is integrity.
It's customary to say things in remembrances like "you will be missed", but that falls short. Leonard Nimoy, you will live on in the lives of all us you have touched.