History is strewn with the wrecks of nations which have gained a little progressiveness at the cost of a great deal of hard manliness, and have thus prepared themselves for destruction as soon as the movements of the world have a chance for it.

The maxim of science is simply that of common sense-simple cases first; begin with seeing how the main force acts when there is as little as possible to impede it, and when you thoroughly comprehend that, add to it in succession the separate effects of each of the incumbering and interfering agencies.

No man has come so near our definition of a constitutional statesman - the powers of a first-rate man and the creed of a second-rate man.

In the faculty of writing nonsense, stupidity is no match for genius.

We see but one aspect of our neighbor, as we see but one side of the moon; in either case there is also a dark half, which is unknown to us. We all come down to dinner, but each has a room to himself.

Nine tenths of modern science is in this respect the same: it is the produce of men whom their contemporaries thought dreamers - who were laughed at for caring for what did not concern them - who, as the proverb went, 'walked into a well from looking at the stars' - who were believed to be useless, if anyone could be such.

Poverty is an anomaly to rich people; it is very difficult to make out why people who want dinner do not ring the bell.