The President's News Conference
12/11/1962
https://www.presidency.ucsb.edu...
It is essential that these decisions be made only after the most thorough evaluation of all the probable benefits and costs to the Governmen...
No nation, least of all ours, can rest easy
We cannot now reclaim the opportunities we lost in the past
It is desirable that we hold to or better the schedule laid down in 1961, and reach firm decisions as soon as practicable in 1963 on future ...