We cannot be sure that we have something worth living for unless we are ready to die for it.

Every time a value is born, existence takes on a new meaning; every time one dies, some part of that meaning passes away.

Armed with all the powers, enjoying all the riches they owe to science, our societies are still trying to live by and to teach systems of values already blasted at the root by science itself.

Those things are dearest to us that have cost us most.

The value of a man can only be measured with regard to other men.

What we obtain too cheap, we esteem too lightly; it is dearness only that gives everything it's value.

Men understand the worth of blessings only when they have lost them.

Everything is worth what its purchaser will pay for it.

If a piece of worthless stone can bruise a cup of gold, its worth is not increased, nor that of the gold diminished.

What is false in the science of facts may be true in the science of values.