Art is long, life is short; judgement difficult, opportunity transient.

All truly wise thoughts have been thought already thousands of times; but to make them truly ours, we must think them over again honestly, until they take root in our personal experience.

Nature is the living, visible garment of God.

Truth has to be repeated constantly, because Error also is being preached all the time, and not just by a few, but by the multitude. In the Press and Encyclopaedias, in Schools and Universities, everywhere Error holds sway, feeling happy and comfortable in the knowledge of having Majority on its side.

The ideal of beauty is simplicity and tranquility.

Nature knows no pause in progress and development, and attaches her curse on all inaction.

Life is the childhood of our immortality.