Being engulfed in practice without delicate knowledge related to it, is in many ways like entering a ship without knowing where it is headed.

That which has no limitations, has no form.

Nothing strengthens authority so much as silence.

A wave is never found alone, but is mingled with as many other waves as there are uneven places in the object where the said wave is produced.

I abhor the supreme folly of those who blame the disciples of nature in defiance of those masters who were themselves her pupils

Any color is more distinctly seen when opposed to its contrary: thus, black on white, blear near yellow, green near red, and so on.

We know more about the movement of celestial bodies than about the soil underfoot.