What does time and tide wait for no man mean

It means if you don't make use of a favorable opportunity, you may never get the same chance again.

Explanation:

the president was the speaker and it was a great part of history.

explanation:

video of the national aeronautic space administration's (nasa) coverage of president john f. kennedy’s address at rice university, houston, texas, concerning the nation's efforts in space exploration. in his speech the president discusses the necessity for the united states to become an international leader in space exploration and famously states, "we choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard."

a term is used to describe a sudden revelation in a short story is "showing forth".