„Teach thy tongue to say, “I do not know,” and thous shalt progress.”

Reality is the leading cause of stress among those in touch with it.

Certainly! Here are 100 more quotes by Robert Frost:

Restlessness is discontent, and discontent is the first necessity of progress.

There is a great deal of unmapped country within us.

Don't think of it as failure. Think of it as time-released success.

Be brave. Take risks. Nothing can substitute experience.