This extraordinary metal, the soul of every manufacture, and the mainspring perhaps of civilised society. Of iron.

Those who aren't making mistakes probably aren't making anything.

Knowledge conquered by labor becomes a possession -a property entirely our own.

He who never made a mistake, never made a discovery.

Great men are always exceptional men; and greatness itself is but comparative. Indeed, the range of most men in life is so limited that very few have the opportunity of being great.

Hope is like the sun, which, as we journey toward it, casts the shadow of our burden behind us.

For want of self-restraint many men are engaged all their lives in fighting with difficulties of their own making.