Error is the price we pay for progress.

Panic of error is the death of progress, and love of truth is its safeguard.

All that is made perfect by progress perishes also by progress.

Inequality was the price of civilization.

Everything new endangers something old. A new machine replaces human hands; a new source of power threatens old businesses; a new trade route wipes out the supremacy of old ports and brings prosperity to new ones. This is the price that must be paid for progress and it is worth it.

Death is much too high a price to pay for the satisfaction of curiosity, needless to say.

The price of mortal existence is age.

[T]he restricting of intellectual and spiritual needs to the mania of progress...

A gross content prolongs his fallen state;
His small successes are failures of the soul,
His little pleasures punctuate frequent griefs:
Hardship and toil are the heavy price he pays
For the right to live and his last wages death.

02.05_046:004

Complacency is the deadly enemy of spiritual progress. The contented soul is the stagnant soul.

There is a price which is too great to pay for peace, and that price can be put in one word. One cannot pay the price of self-respect.

It is better to be destroyed than to triumph in slaying the spirit. Such as it is,the spirit that we have achieved is fair; and it is indestructibly woven into the tissue of the cosmos. We die praising the universe in which at least such an achievement as ours can be.

The price of chemical ecstasy was a dear one, paid in flesh and spirit.

Progress of mankind is the decadence of humanity.