Dr Johann Georg Zimmermann

Conceit and confidence are both of them cheats. The first always imposes on itself; the second frequently deceives others.

If you ask me which is the real hereditary sin of human nature, do you imagine I shall answer pride, or luxury, or ambition, or egotism? No; I shall say indolence. Who conquers indolence will conquer all the rest. Indeed all good principles must stagnate without mental activity.

In fame's temple there is always to be found a niche for rich dunces, importunate scoundrels, or successful butchers of the human race.

Many have been ruined by their fortune, and many have escaped ruin by the want of fortune. To obtain it the great have become little, and the little great.

Open your mouth and purse cautiously, and your stock of wealth and reputation shall, at least in repute, be great.

Take care to be an economist in prosperity: there is no fear of your being one in adversity.

The more you speak of yourself, the more likely you are to lie.

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