Be ashamed to die until you have won some victory for humanity.

Education alone can conduct us to that enjoyment which is, at once, best in quality and infinite in quantity.

Every addition to true knowledge is an addition to human power.

But let a man know that there are things to be known, of which he is ignorant, and it is so much carved out of his domain of universal knowledge.

A life spent worthily should be measured by a nobler line,-by deeds, not years.

We are here to add what we can to, not to get what we can from, Life.

Private passions tire and exhaust themselves, public ones never.