There is nothing more frightful than ignorance in action.

There is nothing more frightful than an active ignorance. [Ger., Es ist nichts schrecklicher als eine thatige Unwissenheit.]

Nothing is more terrible than to see ignorance in action.

The formation of one's character ought to be everyone's chief aim.

It is in human nature to relax, when not compelled by personal advantage or disadvantage.

The older we get the more we must limit ourselves if we wish to be active.