Get rich or die trying.

La memoria es fundamental para no repetir los errores del pasado.

Never be satisfied with where you are; always strive for better.

To be happy, we must not be too concerned with others.

The duties of all public officers are, or at least admit of being made, so plain and simple that men of intelligence may readily qualify themselves for their performance.

The most important tool in science is not the microscope, but the mind.

最甜美的果实往往来自最艰难的时节。

在研究自然时，想象力必须受到逻辑和实验的严格规则指导。