Silence is the maturation of wisdom..

It is man's duty to love and to fear God, even without hope of reward or fear of punishment..

Hold firmly to your word..

The philosophers likewise assume that in Nature there is nothing in vain, so that everything that is not the product of human industry serves a certa….

Know that for the human mind there are certain objects of perception which are within the scope of its nature and capacity; on the other hand, there ….

The fact that laws were given to man, both affirmative and negative, supports the principle, that God's knowledge of future events does not change th….

Inspire me with love for my art and for thy creatures. In the sufferer let me see only the human being..

For the elements have the property of moving back to their place in a straight line, but they have no properties which would cause them to remain whe….

Those who believe that... detailed rules originate in a certain cause, are as far from the truth as those who assume that the whole law is useless..

Galen , in the third section of his book, "The Use of the Limbs," says correctly that it would be in vain to expect to see living beings formed of th….

The corporeal element in man is a large screen and partition that prevents him from perfectly perceiving abstract ideals; this would be the case even….

Transient bodies are only subject to destruction through their substance and not through their form, nor can the essence of their form be destroyed; ….

I believe with perfect faith that the Creator, blessed be his name, is not a body, and that he is free from all accidents of matter, and that he has ….

In the realm of Nature there is nothing purposeless, trivial, or unnecessary.

Just as a person is commanded to honor and revere his father, so he is under an obligation to honor and revere his teacher, even to a greater extent ….

You will certainly not doubt the necessity of studying astronomy and physics, if you are desirous of comprehending the relation between the world and….

The business conduct of the disciples of wise men is truthful and faithful.... He does not allow himself to be made a surety or a guarantor and does ….

The great sickness and the grievous evil consist in this: that all the things that man finds written in books, he presumes to think of as true-and al….

An ignorant man believes that the whole universe only exists for him: as if nothing else required any consideration. If, therefore, anything happens ….

No disease that can be treated by diet should be treated with any other means..

Contrast the experience with something worse and you cannot help feeling happy and grateful because... The change from trouble to comfort gives us mo….