While I thought I have been learning how to live, I have been learning how to die. - Leonardo da Vinci

We do not lack devices for measuring these miserable days of ours, in which it should be our pleasure that they be not frittered away without leaving behind any memory of ourselves in the mind of men.

Men of lofty genius sometimes accomplish the most when they work least, for their minds are occupied with their ideas and the perfection of their conceptions, to which they afterwards give form.

But leaves of yellowish green do not, when they reflect the atmosphere, create a reflection which verges on blue; for every object when seen in a mirror takes part in the color of this mirror; therefore the blue of the atmosphere reflected in the yellow of the leaf appears green, because blue and yellow mixed together form the most brilliant green, and therefore luster on light leaves which are yellowish in color will be a greenish yellow.