A wave is never found alone, but is mingled with the other waves.
Medicine is the restoration of discordant elements.
Here is a thing which the more it is needed the more it is rejected: and this is advice, which is unwillingly heeded by those who most need it, that is to say, by the ignorant.
We must doubt the certainty of everything which passes through the senses, but how much more ought we to doubt things contrary to the senses, such as the existence of God and the soul.
Man has much power of discourse which for the most part is vain and false; animals have but little, but it is useful and true, and a small truth is better than a great lie.
Inequality is the cause of all local movements.
Those who, in debate, appeal to their qualifications, argue from memory, not from understanding.
Fire destroys falsehood, that is sophistry, and restores truth, driving out darkness.
The motive power is the cause of all life.
The eye which turns from a white object in the light of the sun and goes into a less fully lighted place will see everything as dark.
The boundaries of bodies are the least of all things.
The grave will fall in upon him who digs it.
Learning acquired in youth arrests the evil of old age.
Constancy does not begin, but is that which perseveres.
Nothing is so much to be feared as Evil Report.
That which has no limitations, has no form.
The eye – which sees all objects reversed – retains the images for some time.
The knowledge of the past times and of the places of the earth is both an ornament and nutriment to the human mind.
Our body is dependent on heaven and heaven on the Spirit.
Shadow is the diminution alike of light and of darkness, and stands between darkness and light.