Nothing is so good for an ignorant man as silence; and if he was sensible of this he would not be ignorant.

Roam abroad in the world, and take thy fill of its enjoyments before the day shall come when thou must quit it for good.

—Saadi

Reveal not every secret you have to a friend, for how can you tell but that friend may hereafter become an enemy. And bring not all mischief you are able to upon an enemy, for he may one day become your friend.

—Saadi

The rose and the thorn, and sorrow and gladness are linked together.

—Saadi

Ignorance is not innocence but sin.

—Robert Browning

There are many things of which a wise man might wish to be ignorant.

—Ralph Waldo Emerson

Better be ignorant of a matter than half know it.

—Publilius Syrus

Ignorance, the root and the stem of every evil.

—Plato

It's innocence when it charms us, ignorance when it doesn't.

—Mignon McLaughlin