Love is like a spice. It can sweeten your life - however, it can spoil it, too.

To study and constantly, is this not a pleasure? To have friends come from far away places, is this not a joy? If people do not recognize your worth, but this does not worry you, are you not a true gentleman?

One who can move mountains start with the little stones.

If I cannot get men who steer a middle course to associate with, I would far rather have the impetuous and hasty. For the impetuous at any rate assert themselves.

True knowledge is when one knows the limitations of one's knowledge.

Excessive (population) growth may reduce output per worker, repress levels of living for the masses and engender strife

To know everything is to know nothing, but to know nothing is to know everything.