Just as iron rusts from disuse, and stagnant water putrefies, or when cold turns to ice, so our intellect wastes unless it is kept in use.
The Book of the science of Mechanics must precede the Book of useful inventions.
Not to appreciate life, all of life, is not to deserve it.
The sun gives spirit and life to the plants and the earth nourishes them with moisture.
I have wasted my hours.
Intellectual passion dries out sensuality.