Progress is impossible without change, and those who cannot change their minds cannot change anything.

Progress is impossible without change, and those who cannot change their minds cannot change anything.

Those who work most for the world's advancement are the ones who demand least.

Those who work most for the world's advancement are the ones who demand least.

Be an opener of doors for such as come after thee.

Be an opener of doors for such as come after thee.

Is it progress if a cannibal uses a knife and fork?

Is it progress if a cannibal uses a knife and fork?

That in our proper motion we ascend
Up to our native seat; descent and fall
To give read more

That in our proper motion we ascend
Up to our native seat; descent and fall
To give us is adverse.

With every passing hour our solar system comes forty-three
thousand miles closer to globular cluster 13 in the constellation read more

With every passing hour our solar system comes forty-three
thousand miles closer to globular cluster 13 in the constellation
Hercules, and still there are some misfits who continue to insist
that there is no such thing as progress.

I walk slowly, but I never walk backward.

I walk slowly, but I never walk backward.

What follows I flee; what flees I ever pursue.
[Lat., Quod sequitur, fugio; quod fugit, usque sequor.]

What follows I flee; what flees I ever pursue.
[Lat., Quod sequitur, fugio; quod fugit, usque sequor.]

Westward the course of empire takes its way;
The four first Acts already past,
A fifth shall read more

Westward the course of empire takes its way;
The four first Acts already past,
A fifth shall close the Drama with the day;
Time's noblest offspring is the last.