One ought not to return injustice, nor do evil to anybody in the world, no matter what one may have suffered from them.

There is no illness of the body except for the mind

It seems that God took away the minds of poets that they might better express His.

When you want wisdom and insight as badly as you want to breathe, it is then you shall have it.

Life without enquiry is not worth living for a man.

Thou shouldst eat to live; not live to eat.

Wisdom is knowing what you don't know.