A mind full of knowledge is worth more than a belly full of bread.

One who learns all he can is on the path to know all he must.

One who sharpens his sword before sharpening his mind has already been conquered by ignorance.

The mind is a temple of knowledge, the heart is a temple of understanding, and the soul is a temple of wisdom; together they are a temple of enlightenment.

The greatest fortress in the universe is an ignorant mind; not even the highest thought can leap over it.

Knowledge helps its enemies, but ignorance harms even its friends.