“Consequently he who wishes to attain to human perfection, must therefore first study Logic, next the various branches of Mathematics in their proper order, then Physics, and lastly Metaphysics.”

Do not consider it proof just because it is written in books, for a liar who will deceive with his tongue will not hesitate to do the same with his pen.

The more necessary a thing is for living beings, the more easily it is found and the cheaper it is; the less necessary it is, the rarer and dearer it is.

Do not imagine that these most difficult problems can be thoroughly understood by any one of us.

Lose with truth and right rather than gain with falsehood and wrong.

The key to the understanding and to the full comprehension of all that the Prophets have said is found in the knowledge of the figures, their general ideas, and the meaning of each word they contain.

There is no difference between the worry of a human mother and an animal mother for their offspring. A mother’s love does not derive from the intellect but from the emotions, in animals just as in humans.

Commune with your own heart upon your bed, and be still.

Teach thy tongue to say ‘I do not know,’ and thou shalt progress.

Man’s obsession to add to his wealth and honor is the chief source of his misery.

I will destroy my enemies by converting them to friends.

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

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 all the more so if the books are old.

It is better and more satisfactory to acquit a thousand guilty persons than to put a single innocent one to death.

All the evils that men cause to each other because of certain desires, or opinions or religious principles, are rooted in ignorance. [All hatred would come to an end] when the earth was flooded with the knowledge of God.

There are eight levels of charity. The highest is when you strengthen a man’s hand until he need no longer be dependent upon others.

It is hard for a woman with whom an uncircumcised man has had sexual intercourse to separate from him. In my opinion this is the strongest of the reasons for circumcision.

Their whole life depends on spending money, and now they’ve got none to spend. That’s our civilization and our education: bring up the masses to depend entirely on spending money, and then the money gives out.

I was a smart kid. I went to a private school in middle school and got kicked out.

Experts always know everything but the fine points. When I took my citizenship exams, no one there knew how the White House came to be called the White House.

I know when I’m working I seldom get into trouble. My educated guess is that boredom has caused most of the problems with Hollywood celebrities.

I’ve done jiujitsu a huge chunk of my life, and I try to spend a lot of time educating people on the nuances, the subtleness of the ground game. It’s a big part of mixed martial arts.

Untutored courage is useless in the face of educated bullets.

One of the goals of education should be to teach that life is precious.

All of life is education and everybody is a teacher and everybody is forever a pupil.