I'm not sure what GB means by liberal because liberal generally has a political implication. In the case of the pastor who delivered the sermon I posted, he is quite conservative politically.
Nevertheless, the overall message delivered in the sermon is from a "mainstream" Christian perspective, not one of "fundamentalism". What we see, in my opinion, in these science forums are fundamentalist views, not those of mainstream Christianity. In other words, the greater Christian community thinks a 6,000 year old earth is ridiculous.
Darrow: Does the statement "The morning and the evening were the first day" and "The morning and the evening were the second day" mean anything to you?
Bryan: I do not think it means necessarily a twenty-four-hour day.
Darrow: What do you consider it to be?
Bryan: I have not attempted to explain it. The word "day" there in the very next chapter is used to describe a period. I do not see that there is necessity for construing the words "the evening and the morning" as meaning necessarily a twenty-four hour day.
Darrow: You think these were not literal days?
Bryan: I do not think they were twenty-four-hour days . . . but I think it would be just as easy for the kind of God we believe in to make the earth in six days as in six years or in six million years or in six hundred million years. I do not think it is important whether we believe one or the other.
Darrow: Do you think those were literal days?
Bryan: My impression is that they were periods, but I would not attempt to argue against anybody who wanted to believe in literal days.
Darrow: Do you think the sun was made on the fourth day?
Bryan: Yes.
Darrow: And they had evening and morning without the sun?
Bryan: I am simply saying it is a period.
Darrow: They had evening and morning for four periods without the sun, do you think?
Bryan: I believe in Creation, as there told, and if I am not able to explain it, I will accept it.
Darrow: Then you can explain it to suit yourself . . . If you call those periods, they may have been a very long time?
Bryan: They might have been.
Darrow: Then Creation might have been going on for a very long time?
Bryan: It might have continued for millions of years.
...
Bryan: Your Honor, I think I can shorten this testimony. The only purpose Mr. Darrow has is to slur at the Bible, but I will answer his questions. I will answer it all at once, and I have no objection in the world. I want the world to know that this man, who does not believe in a God, is trying to use a court in Tennessee ...
Darrow: I object to that ...
Bryan: ...to slur at it, and, while it will require time, I am willing to take it.
Darrow: I object to your statement. I am examining you on your fool ideas that no intelligent Christian on earth believes.