“Be free. Don't just make freedom something you have, make it something you do … something you ARE!”

"This Is The Sea"
This Is the Sea (1985)
Context: You're trying to make sense
of something that you just don't see
You're trying to make sense now
and you know you once held the key
But that was the river
this is the sea.

Rush Lyrics

Campaign speech in Michigan (1968) https://books.google.com/?id=uXRx5hGm8zYC&dq="Do+you+want+to+make+a+point+or+do+you+want+to+make+a+change"&pg=PA17
1960s

Another excerpt from the Tris Speaker speech – featuring a much more familiar version of the "wasting your time" warning – as quoted in "Standing Cheer for Roberto" by Houston Chronicle sportswriter John Wilson, in The Sporting News (February 20, 1971), p. 44.

Other, <big><big>1970s</big></big>, <big>1971</big>
Context: We must all live together and work together no matter what race or nationality. If you have an opportunity to accomplish something that will make things better for someone coming behind you, and you don't do that, you are wasting your time on this earth.

America's Drug Forum interview (1991)
Context: It's a moral problem that the government is making into criminals people, who may be doing something you and I don't approve of, but who are doing something that hurts nobody else. Most of the arrests for drugs are for possession by casual users.
Now here's somebody who wants to smoke a marijuana cigarette. If he's caught, he goes to jail. Now is that moral? Is that proper? I think it's absolutely disgraceful that our government, supposed to be our government, should be in the position of converting people who are not harming others into criminals, of destroying their lives, putting them in jail. That's the issue to me. The economic issue comes in only for explaining why it has those effects. But the economic reasons are not the reasons.

Attributed to Strauss at many sites on the internet, this is actually Norman Maclean, in A River Runs Through It (1976)
Misattributed